[Event "World op 24th"]
[Site "Philadelphia"]
[Date "1996.??.??"]
[Round "?"]
[White "Ingimarsson, Oddur"]
[Black "Mengarini, Ariel"]
[Result "1/2-1/2"]
[ECO "B23"]
[BlackElo "2215"]
[PlyCount "41"]
[EventDate "1996.06.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 e6 3. Nge2 d5 4. exd5 exd5 5. d4 Be6 6. g3 Nf6 7. Bg2 Qd7 8. Bg5 Nc6 9. Bxf6 gxf6 10. dxc5 0-0-0 11. Nf4 d4 12. Ncd5 Bxd5 13. Bxd5 Re8+ 14. Kf1 Bxc5 15. Kg2 Ne5 16. Bf3 Rhg8 17. Re1 Ng6 18. Rxe8+ Rxe8 19. Qd2 Qf5 20. Nxg6 hxg6 21. Qd3 1/2-1/2

[Event "World op 23rd"]
[Site "Philadelphia"]
[Date "1995.??.??"]
[Round "7"]
[White "Adelman, Charles D"]
[Black "Mengarini, Ariel"]
[Result "1-0"]
[ECO "A06"]
[WhiteElo "2240"]
[BlackElo "2260"]
[PlyCount "59"]
[EventDate "1995.06.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. Nf3 d5 2. b3 Bg4 3. Bb2 Bxf3 4. exf3 Nf6 5. g3 Nbd7 6. f4 e6 7. Bg2 Bc5 8. 0-0 c6 9. d3 h5 10. h4 Rh6 11. Nd2 Rg6 12. d4 Bd6 13. Qe2 Ng4 14. Nf3 Be7 15. Rfe1 Kf8 16. Ng5 Bd6 17. Bh3 Ndf6 18. f3 Nh6 19. Bxe6 Bxf4 20. gxf4 fxe6 21. Ba3+ Kg8 22. Qxe6+ Kh8 23. f5 Rxg5+ 24. hxg5 Ne4 25. Be7 Nxg5 26. Bxd8 Nxe6 27. Rxe6 Rxd8 28. f6 Rg8 29. fxg7+ Rxg7+ 30. Kf2 1-0

[Event "World op 23rd"]
[Site "Philadelphia"]
[Date "1995.??.??"]
[Round "1"]
[White "Chow, Albert"]
[Black "Mengarini, Ariel"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "2315"]
[BlackElo "2260"]
[PlyCount "57"]
[EventDate "1995.06.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 Nbd7 5. Bg5 c6 6. cxd5 exd5 7. e3 Bd6 8. Bd3 h6 9. Bh4 g5 10. Bg3 Nf8 11. Qc2 Bg4 12. Ne5 Bh5 13. 0-0 Ne6 14. Rab1 Ng4 15. Nxg4 Bxg4 16. Bxd6 Qxd6 17. f3 Bh5 18. g4 Bg6 19. Bxg6 fxg6 20. Qxg6+ Ke7 21. Ne2 Rag8 22. Qc2 Ng7 23. Qc5 h5 24. Qxd6+ Kxd6 25. Ng3 Re8 26. Rbe1 Re6 27. e4 Reh6 28. Nf5+ Nxf5 29. gxf5 1-0

[Event "World op 23rd"]
[Site "Philadelphia"]
[Date "1995.??.??"]
[Round "9"]
[White "Mc Clelland, Shearwood"]
[Black "Mengarini, Ariel"]
[Result "1-0"]
[ECO "B00"]
[WhiteElo "2140"]
[BlackElo "2260"]
[PlyCount "95"]
[EventDate "1995.06.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 Nc6 2. Nf3 d6 3. d4 Nf6 4. Nc3 Bg4 5. Be2 e5 6. d5 Nb8 7. 0-0 Be7 8. Be3 0-0 9. Nd2 Bc8 10. Na4 Qd7 11. c4 Ng4 12. Bxg4 Qxg4 13. f3 Qg6 14. Kh1 f5 15. c5 Bd7 16. Qb3 Bxa4 17. Qxa4 f4 18. Bg1 dxc5 19. Qb3 Qb6 20. Qc3 Nd7 21. Rfc1 Bd6 22. Nb3 Qb5 23. Nxc5 Nxc5 24. Bxc5 Rf7 25. Bxd6 cxd6 26. a4 Qd7 27. a5 a6 28. Qc4 h6 29. Qa4 Rc8 30. Qxd7 Rxc1+ 31. Rxc1 Rxd7 32. Kg1 Kf7 33. Kf2 Ke7 34. Rc8 Rd8 35. Rc3 Kd7 36. g3 fxg3+ 37. hxg3 Rc8 38. Rxc8 Kxc8 39. f4 exf4 40. gxf4 Kd7 41. Kg3 Ke7 42. e5 dxe5 43. fxe5 g6 44. Kg4 Kd7 45. Kf4 Ke7 46. Ke4 Kd7 47. e6+ Kd6 48. Kf4 1-0

[Event "World op 23rd"]
[Site "Philadelphia"]
[Date "1995.??.??"]
[Round "3"]
[White "Mengarini, Ariel"]
[Black "Anderson, Renard"]
[Result "1-0"]
[ECO "D94"]
[WhiteElo "2260"]
[BlackElo "2295"]
[PlyCount "77"]
[EventDate "1995.06.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. dxc5 Qa5+ 4. Nc3 g6 5. e3 Bg7 6. Bd2 Qxc5 7. Nf3 Nc6 8. Be2 d5 9. cxd5 Nxd5 10. Rc1 0-0 11. 0-0 Qd6 12. Nxd5 Qxd5 13. Bc4 Qh5 14. Bc3 e5 15. Bd5 a5 16. Bxc6 bxc6 17. Nxe5 Qg5 18. Nxc6 Be6 19. f4 Qb5 20. Bxg7 Kxg7 21. Qd4+ f6 22. a4 Qb3 23. e4 Rf7 24. Rf3 Qb7 25. Nd8 Qd7 26. Qxd7 Bxd7 27. Nxf7 Kxf7 28. Rc7 Ke6 29. b3 Kd6 30. Rcc3 Ra7 31. Rfd3+ Ke7 32. Rc5 Be6 33. Kf2 Bd7 34. Rdd5 Rb7 35. e5 Be6 36. exf6+ Kxf6 37. Rd3 Rb4 38. Rb5 Rxf4+ 39. Rf3 1-0

[Event "World op 23rd"]
[Site "Philadelphia"]
[Date "1995.??.??"]
[Round "4"]
[White "Mengarini, Ariel"]
[Black "Karklins, Andrew"]
[Result "0-1"]
[ECO "E61"]
[WhiteElo "2260"]
[BlackElo "2325"]
[PlyCount "196"]
[EventDate "1995.06.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 d6 5. Qc2 Bg4 6. e4 Bxf3 7. gxf3 Nc6 8. Be3 e5 9. Ne2 Nh5 10. 0-0-0 exd4 11. Nxd4 Nxd4 12. Bxd4 Bxd4 13. Rxd4 Qf6 14. Qc3 Nf4 15. Kc2 0-0 16. Rd2 Qxc3+ 17. Kxc3 Rae8 18. Bd3 Re5 19. Kd4 f5 20. Bc2 fxe4 21. fxe4 Rh5 22. f3 Ne6+ 23. Ke3 Rh3 24. Bd1 Ng5 25. Rf2 Nf7 26. Rg1 Ne5 27. b3 Nd7 28. Rg3 Rh4 29. f4 a5 30. Rg4 Rxg4 31. Bxg4 Nc5 32. Bd1 Kg7 33. Rg2 Re8 34. Bc2 Kf6 35. Rd2 Ke7 36. h4 Rf8 37. Rg2 Kf6 38. h5 Re8 39. hxg6 hxg6 40. Rh2 Kg7 41. Rg2 Nd7 42. Kd4 Rf8 43. Ke3 Rh8 44. e5 Rh3+ 45. Kd2 dxe5 46. Bf5 Rh8 47. Rxg6+ Kf7 48. Rg2 exf4 49. Bxd7 Rd8 50. Rf2 Rxd7+ 51. Kc3 Ke6 52. Rxf4 Ke5 53. Rf2 Rh7 54. Rf8 Rh3+ 55. Kb2 Ke6 56. Ka3 b6 57. Ka4 Rh5 58. a3 Rh4 59. Kb5 Rh5+ 60. Ka4 Rc5 61. Rd8 Ke5 62. Rd7 Ke4 63. Rd8 Ke5 64. Rd7 Ke6 65. Rd8 Ke7 66. Rd3 c6 67. Rd4 Rh5 68. b4 axb4 69. axb4 Ke6 70. b5 c5 71. Rd8 Rh4 72. Kb3 Rh3+ 73. Kb2 Ke5 74. Rd7 Rh6 75. Rd8 Ke4 76. Rd7 Rh2+ 77. Kb3 Rh3+ 78. Kb2 Rd3 79. Rb7 Kd4 80. Rxb6 Kxc4 81. Rb8 Rd2+ 82. Kc1 Rh2 83. b6 Kc3 84. Kd1 Rh1+ 85. Ke2 Rb1 86. b7 c4 87. Ke3 Re1+ 88. Kf2 Re7 89. Kf1 Kb3 90. Rh8 Rxb7 91. Ke2 Rd7 92. Rb8+ Kc2 93. Re8 c3 94. Re6 Kc1 95. Re8 c2 96. Re6 Rd5 97. Re8 Rd4 98. Re7 Rd1 0-1

[Event "World op 23rd"]
[Site "Philadelphia"]
[Date "1995.??.??"]
[Round "6"]
[White "Mengarini, Ariel"]
[Black "Khatena, Moshe"]
[Result "0-1"]
[ECO "B03"]
[WhiteElo "2260"]
[BlackElo "2275"]
[PlyCount "60"]
[EventDate "1995.06.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Bc4 Nb6 5. Bb3 dxe5 6. Qh5 e6 7. dxe5 a5 8. a4 Na6 9. Nf3 Nc5 10. 0-0 Nxb3 11. cxb3 Qd3 12. Nc3 Bd7 13. Rd1 Qg6 14. Qh3 0-0-0 15. Bg5 f6 16. Bf4 Be7 17. Rac1 f5 18. Nd4 Qf7 19. Qd3 Kb8 20. Ncb5 Bxb5 21. Qxb5 Rd5 22. Qe2 g5 23. Be3 f4 24. Qc2 Rc5 25. Qe4 fxe3 26. Qxe3 Nd5 27. Qe4 Rxc1 28. Rxc1 Qf4 29. Qxf4 Nxf4 30. g3 Rd8 0-1

[Event "World op 23rd"]
[Site "Philadelphia"]
[Date "1995.??.??"]
[Round "8"]
[White "Mengarini, Ariel"]
[Black "Spanton, Timothy"]
[Result "0-1"]
[ECO "C26"]
[WhiteElo "2260"]
[BlackElo "2095"]
[PlyCount "72"]
[EventDate "1995.06.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. a3 d5 4. exd5 Nxd5 5. Qh5 Nc6 6. Bb5 Qd6 7. Nf3 Nxc3 8. dxc3 Bd7 9. Bg5 g6 10. Qh4 Be7 11. 0-0 Bxg5 12. Nxg5 Qe7 13. Qh6 f6 14. Ne4 0-0-0 15. Rad1 Nb8 16. Be2 Bc6 17. Qh4 g5 18. Qh3+ Bd7 19. Qe3 Bc6 20. Bg4+ Nd7 21. Qxa7 b6 22. Ng3 h5 23. Nxh5 Qh7 24. h3 f5 25. Be2 Nb8 26. c4 g4 27. hxg4 Qg6 28. f3 fxg4 29. Rxd8+ Rxd8 30. fxg4 Qe4 31. Rf2 Qe3 32. Ng7 Rh8 33. c5 Bxg2 34. Ba6+ Nxa6 35. Qxa6+ Bb7 36. Nf5 Rh1# 0-1

[Event "Philadelphia Int 5th"]
[Site "Philadelphia"]
[Date "1994.06.28"]
[Round "9"]
[White "Mengarini, Ariel"]
[Black "Rogers, Norman"]
[Result "1-0"]
[ECO "E91"]
[WhiteElo "2255"]
[BlackElo "2290"]
[PlyCount "115"]
[EventDate "1994.06.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. d4 Bg7 4. Nc3 0-0 5. Qc2 d6 6. Bg5 Nbd7 7. Rd1 c6 8. e4 Qc7 9. Be2 e5 10. 0-0 a5 11. h3 Re8 12. dxe5 dxe5 13. Be3 Bf8 14. Na4 Nh5 15. c5 Nf4 16. Bc4 Be7 17. Qb3 Rf8 18. Kh2 Kg7 19. g3 Nxh3 20. Nb6 Nxb6 21. cxb6 Qb8 22. Nxe5 Ng5 23. Bf4 Be6 24. Nxg6 Bxc4 25. Qxc4 Qc8 26. Bxg5 hxg6 27. Bxe7 Rh8+ 28. Kg1 Qh3 29. Bh4 g5 30. Qd4+ Kg6 31. Qd6+ f6 32. Qd7 Qxd7 33. Rxd7 gxh4 34. Rxb7 Rab8 35. Rxb8 Rxb8 36. gxh4 Rxb6 37. b3 Kh5 38. Kg2 Kxh4 39. Kf3 a4 40. Kf4 Kh5 41. bxa4 Kg6 42. Rg1+ Kf7 43. Rg3 Rb2 44. Ra3 Rxf2+ 45. Ke3 Rh2 46. Kd4 Ke6 47. a5 Kd6 48. a6 Rh8 49. a7 Ra8 50. Ra4 Kd7 51. Kc5 Kc7 52. Ra3 Kb7 53. Rb3+ Kc7 54. Rg3 Kb7 55. Rg7+ Ka6 56. Kxc6 Rc8+ 57. Kd7 Ra8 58. Ke6 1-0

[Event "Philadelphia Int 5th"]
[Site "Philadelphia"]
[Date "1994.06.27"]
[Round "8"]
[White "Alexopoulos, Georgios"]
[Black "Mengarini, Ariel"]
[Result "1/2-1/2"]
[ECO "C44"]
[WhiteElo "2260"]
[BlackElo "2255"]
[PlyCount "178"]
[EventDate "1994.06.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 e5 2. d4 exd4 3. c3 d5 4. exd5 Qxd5 5. cxd4 Nc6 6. Nf3 Nf6 7. Nc3 Bb4 8. Be2 Ne4 9. Bd2 Bxc3 10. bxc3 Nxd2 11. Qxd2 0-0 12. 0-0 Bg4 13. h3 Bh5 14. Rab1 Bg6 15. Rb5 Qe4 16. Ng5 Qe7 17. Rxb7 Rfe8 18. Bb5 Qd6 19. Bd3 Ne5 20. dxe5 Qxd3 21. Qxd3 Bxd3 22. Rd1 Bc4 23. Rxc7 Bxa2 24. Ra1 Bd5 25. c4 h6 26. cxd5 hxg5 27. e6 fxe6 28. dxe6 Rxe6 29. Raxa7 Rxa7 30. Rxa7 Kh7 31. Kh2 Rf6 32. Kg3 Rf4 33. Ra5 Kh6 34. Ra6+ Kh7 35. Ra5 Kh6 36. Ra3 Kg6 37. Rf3 Ra4 38. Rf8 Rb4 39. Re8 Rf4 40. f3 Ra4 41. Re4 Ra2 42. Rg4 Kf6 43. h4 gxh4+ 44. Kxh4 Ra5 45. Rb4 Ra6 46. f4 Ra1 47. Kg4 Ra6 48. Rb8 Ra2 49. Rb6+ Kf7 50. g3 Ra3 51. f5 Rc3 52. Kf4 Ra3 53. g4 Ra4+ 54. Kg5 Ra1 55. Rb7+ Kf8 56. Kg6 Ra6+ 57. Kh5 Rh6+ 58. Kg5 Ra6 59. Rb8+ Kf7 60. Rh8 Ra1 61. Rh3 Ra4 62. Kh5 Ra5 63. Rf3 Kf6 64. g5+ Kf7 65. Kg4 Ra4+ 66. Rf4 Ra1 67. Re4 Rg1+ 68. Kf4 Rf1+ 69. Ke5 Rf2 70. g6+ Ke7 71. Re1 Ra2 72. Kf4+ Kf8 73. Re4 Ra1 74. Kg5 Rg1+ 75. Rg4 Rf1 76. Rf4 Rg1+ 77. Rg4 Rf1 78. Re4 Rg1+ 79. Kf4 Rf1+ 80. Ke5 Ke7 81. Re2 Ra1 82. f6+ gxf6+ 83. Kf5+ Kf8 84. Kxf6 Rf1+ 85. Kg5 Rg1+ 86. Kf6 Rf1+ 87. Kg5 Rg1+ 88. Kh6 Rh1+ 89. Kg5 Rg1+ 1/2-1/2

[Event "Philadelphia Int 5th"]
[Site "Philadelphia"]
[Date "1994.06.24"]
[Round "1"]
[White "Orlov, Georgi"]
[Black "Mengarini, Ariel"]
[Result "1-0"]
[ECO "E16"]
[WhiteElo "2515"]
[BlackElo "2255"]
[PlyCount "71"]
[EventDate "1994.06.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 c5 4. Nf3 b6 5. Bg2 Bb7 6. d5 exd5 7. Nh4 g6 8. Nc3 Bg7 9. cxd5 0-0 10. 0-0 a6 11. e4 d6 12. f4 Nbd7 13. Re1 Re8 14. Nf3 Qb8 15. Re2 b5 16. e5 Ng4 17. h3 Nh6 18. e6 Nb6 19. Ng5 f6 20. g4 fxg5 21. fxg5 Nf7 22. exf7+ Kxf7 23. Bf4 Nc4 24. Re6 Bd4+ 25. Kh2 Rxe6 26. Qf1 Bxc3 27. bxc3 Rf6 28. gxf6 Qh8 29. Re1 Re8 30. g5 Bc8 31. Qf2 h6 32. Rxe8 Qxe8 33. gxh6 g5 34. Qg3 g4 35. hxg4 Qe2 36. h7 1-0

[Event "Philadelphia Int 5th"]
[Site "Philadelphia"]
[Date "1994.06.??"]
[Round "6"]
[White "Abbasi, Nasser M"]
[Black "Mengarini, Ariel"]
[Result "1-0"]
[ECO "C45"]
[WhiteElo "2275"]
[BlackElo "2255"]
[PlyCount "73"]
[EventDate "1994.06.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Nxc6 Qf6 6. Qd2 Qxc6 7. Bd3 Nf6 8. 0-0 0-0 9. Nc3 Bb4 10. Qf4 Bxc3 11. bxc3 d6 12. Rb1 a6 13. c4 Re8 14. Re1 Ng4 15. Bb2 Ne5 16. Qg3 Re6 17. f4 Rg6 18. Qf2 Nxd3 19. cxd3 Bh3 20. g3 f6 21. f5 Rg5 22. Bc1 Rg4 23. Qd4 b5 24. Qd5+ Qxd5 25. cxd5 g6 26. fxg6 Rxg6 27. Bb2 f5 28. exf5 Bxf5 29. Re3 Rf8 30. Rc1 Bh3 31. Re4 Rg5 32. Rh4 Bf5 33. Rxc7 Bxd3 34. Rh6 Rf1+ 35. Kg2 Rxd5 36. Re6 Kf8 37. Bg7+ 1-0

[Event "Philadelphia Int 5th"]
[Site "Philadelphia"]
[Date "1994.06.??"]
[Round "2"]
[White "Mengarini, Ariel"]
[Black "De Varo, Jed L"]
[Result "1/2-1/2"]
[ECO "E11"]
[WhiteElo "2255"]
[PlyCount "56"]
[EventDate "1994.06.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Bd2 Qe7 5. Bg2 Nc6 6. Nf3 Bxd2+ 7. Nbxd2 d6 8. b4 Nxb4 9. Qa4+ Nc6 10. d5 exd5 11. cxd5 Nxd5 12. Nd4 Qe5 13. N2f3 Qe4 14. 0-0 Nb6 15. Qb5 Bd7 16. Qb2 0-0 17. Nb5 Rfc8 18. Rfc1 a6 19. Nxd6 cxd6 20. Qxb6 Rab8 21. e3 d5 22. Nd4 Qe5 23. Rc5 Be6 24. Rac1 Qc7 25. Qb2 Qd6 26. Qa3 Rc7 27. Qc3 Rbc8 28. Bf1 Bd7 1/2-1/2

[Event "Philadelphia Int 5th"]
[Site "Philadelphia"]
[Date "1994.06.??"]
[Round "4"]
[White "Mengarini, Ariel"]
[Black "Eng, Kenneth"]
[Result "1-0"]
[ECO "A03"]
[WhiteElo "2255"]
[BlackElo "2205"]
[PlyCount "77"]
[EventDate "1994.06.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. f4 Nf6 2. Nf3 d5 3. e3 g6 4. b4 Bg7 5. Bb2 0-0 6. Be2 Nbd7 7. d3 c5 8. bxc5 Nxc5 9. 0-0 b6 10. Qe1 Bb7 11. Nbd2 Rc8 12. Bd1 e6 13. Nb3 Na4 14. Be5 Nd7 15. Bxg7 Kxg7 16. Qb4 Nc3 17. Nbd4 Re8 18. a4 Qe7 19. Qb2 Qf6 20. a5 b5 21. a6 Ba8 22. Ra3 Nxd1 23. Rxd1 Rc5 24. Rb3 Rb8 25. Rb1 Rb6 26. Rxb5 Rcxb5 27. Nxb5 Qxb2 28. Rxb2 Bc6 29. Nfd4 Bxb5 30. Rxb5 Rxa6 31. Rb7 Nf6 32. h3 Kf8 33. Nf3 Ne8 34. c4 dxc4 35. dxc4 Nd6 36. Rc7 Ne8 37. Rd7 Nf6 38. Rb7 Ra1+ 39. Kh2 1-0

[Event "Philadelphia Int 5th"]
[Site "Philadelphia"]
[Date "1994.06.??"]
[Round "5"]
[White "Mengarini, Ariel"]
[Black "Johnson, Ben"]
[Result "1-0"]
[ECO "A56"]
[WhiteElo "2255"]
[PlyCount "23"]
[EventDate "1994.06.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. dxc5 Na6 4. a3 Nxc5 5. b4 Na6 6. Nc3 Qc7 7. e3 b6 8. Bb2 Bb7 9. Nf3 Rd8 10. Be2 d5 11. cxd5 Nxd5 12. Bb5+ 1-0

[Event "Philadelphia Int 5th"]
[Site "Philadelphia"]
[Date "1994.06.??"]
[Round "3"]
[White "Shahade, Gregory P"]
[Black "Mengarini, Ariel"]
[Result "1-0"]
[ECO "A21"]
[BlackElo "2255"]
[PlyCount "35"]
[EventDate "1994.06.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 Ba5 4. b4 c6 5. bxa5 cxd5 6. cxd5 Qxa5 7. Qb3 Nf6 8. Nf3 e4 9. Nd4 Na6 10. Ba3 Nc5 11. Qg3 0-0 12. Nf5 Nh5 13. Nh6+ Kh8 14. Qd6 Re8 15. Bxc5 gxh6 16. Bd4+ Kg8 17. g4 Nf4 18. Qxf4 1-0

[Event "Philadelphia Int 5th"]
[Site "Philadelphia"]
[Date "1994.??.??"]
[Round "7"]
[White "Mengarini, Ariel"]
[Black "Langusch, Roman"]
[Result "1-0"]
[ECO "B03"]
[WhiteElo "2255"]
[PlyCount "47"]
[EventDate "1994.06.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Bc4 Nb6 5. Bb3 Nc6 6. exd6 cxd6 7. Nf3 e6 8. Nc3 Na5 9. 0-0 Be7 10. Qe2 Bd7 11. Bf4 Rc8 12. Nb5 a6 13. Nxd6+ Bxd6 14. Bxd6 Bb5 15. Qe5 Nxb3 16. axb3 Bxf1 17. Bc5 Qf6 18. Bxb6 Bb5 19. c4 Bc6 20. Qc5 h5 21. Re1 Rh6 22. d5 Rg6 23. Ne5 Rg5 24. Qd6 1-0

[Event "Somerset op"]
[Site "Somerset"]
[Date "1992.??.??"]
[Round "?"]
[White "Bouzoukis, Charles"]
[Black "Mengarini, Ariel"]
[Result "1-0"]
[ECO "C56"]
[WhiteElo "2250"]
[BlackElo "2220"]
[PlyCount "75"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Nf6 5. e5 d5 6. Bb5 Ne4 7. Nxd4 Bc5 8. Be3 Bd7 9. Bxc6 bxc6 10. Nd2 Nxd2 11. Qxd2 Bb6 12. Nb3 Qe7 13. Qc3 0-0 14. 0-0 Rae8 15. Bc5 Bxc5 16. Nxc5 Bf5 17. Rfe1 Qd8 18. Nb3 Qa8 19. Nd4 Bd7 20. Re3 Qb7 21. b4 Qb6 22. Rae1 Re7 23. h3 Ra8 24. Rg3 a5 25. a3 axb4 26. axb4 Rae8 27. Kh2 g6 28. Rge3 Rb8 29. e6 fxe6 30. Nf5 Rf7 31. Nh6+ Kf8 32. Nxf7 d4 33. Qb2 dxe3 34. Qf6 Ke8 35. Ne5 Qd4 36. Qf7+ Kd8 37. Qf8+ Be8 38. Nxc6+ 1-0

[Event "Somerset op"]
[Site "Somerset"]
[Date "1992.??.??"]
[Round "?"]
[White "Mengarini, Ariel"]
[Black "McCarthy, Brian"]
[Result "1/2-1/2"]
[ECO "B41"]
[WhiteElo "2220"]
[BlackElo "2275"]
[PlyCount "65"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. c4 d6 4. d4 cxd4 5. Nxd4 Nf6 6. Nc3 Be7 7. Be2 a6 8. Be3 0-0 9. 0-0 Nbd7 10. f4 Re8 11. Bf3 Bf8 12. Qd2 e5 13. fxe5 Nxe5 14. b3 h6 15. Qf2 g6 16. Rad1 Bg7 17. h3 Qe7 18. Qh4 g5 19. Qg3 Be6 20. Nd5 Nxd5 21. exd5 Bd7 22. Bh5 Ng6 23. Bc1 Be5 24. Qf3 Rf8 25. Nf5 Bxf5 26. Qxf5 Nf4 27. Bf3 Rad8 28. Bxf4 Bxf4 29. Be4 f6 30. Rde1 Qg7 31. Bf3 Be5 32. Bh5 Rd7 33. Bg4 1/2-1/2

[Event "New York op"]
[Site "New York"]
[Date "1991.??.??"]
[Round "7"]
[White "Byrne, Robert Eugene"]
[Black "Mengarini, Ariel"]
[Result "1-0"]
[ECO "C90"]
[WhiteElo "2465"]
[BlackElo "2220"]
[PlyCount "73"]
[EventDate "1991.03.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 023"]
[Source "ChessBase"]
[SourceDate "1991.08.01"]
[SourceVersion "1"]
[SourceVersionDate "1991.08.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 Na5 9. Bc2 c5 10. d4 Qc7 11. Nbd2 cxd4 12. cxd4 Bg4 13. h3 Bh5 14. d5 Rc8 15. Bb1 0-0 16. Nf1 Bg6 17. Ng3 Nh5 18. Nxh5 Bxh5 19. a4 b4 20. Bd3 Qb7 21. Qe2 Ra8 22. g4 Nb3 23. Rb1 Bg6 24. Be3 Rfc8 25. Nd2 Nc5 26. Bxc5 Rxc5 27. Rec1 Rxc1+ 28. Rxc1 Bg5 29. Rc6 b3 30. Bxa6 Qb4 31. Nf3 Bxe4 32. Nxg5 Bxd5 33. Bb5 Qf4 34. Rxd6 Qc1+ 35. Qf1 Qc5 36. Rd7 h6 37. Qd1 1-0

[Event "New York op"]
[Site "New York"]
[Date "1991.??.??"]
[Round "1"]
[White "Goldin, Alexander"]
[Black "Mengarini, Ariel"]
[Result "1-0"]
[ECO "D08"]
[WhiteElo "2565"]
[BlackElo "2220"]
[PlyCount "51"]
[EventDate "1991.03.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 023"]
[Source "ChessBase"]
[SourceDate "1991.08.01"]
[SourceVersion "1"]
[SourceVersionDate "1991.08.01"]
[SourceQuality "1"]

1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. Nbd2 Bg4 6. a3 Qe7 7. h3 Bh5 8. Qa4 0-0-0 9. b4 Kb8 10. g4 Bg6 11. Bb2 Nxe5 12. Nxe5 Qxe5 13. Nf3 Qe4 14. Bxd4 c5 15. Be5+ Ka8 16. Bg2 Nf6 17. 0-0 Qxc4 18. Rfc1 Qe6 19. bxc5 Nd7 20. Bd4 Qe4 21. Ne5 Nxc5 22. Rxc5 Bxc5 23. Bxe4 Rxd4 24. Bxb7+ Kxb7 25. Qc6+ Kb8 26. Qxc5 1-0

[Event "New York op"]
[Site "New York"]
[Date "1991.??.??"]
[Round "?"]
[White "Mengarini, Ariel"]
[Black "Battes, Lee T"]
[Result "1-0"]
[ECO "A09"]
[WhiteElo "2220"]
[PlyCount "62"]
[EventDate "1991.03.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 d5 3. cxd5 Nxd5 4. b3 e6 5. Bb2 c5 6. g3 b6 7. Bg2 Bb7 8. 0-0 Nf6 9. Na3 Be7 10. Qc2 Na6 11. Rac1 h6 12. Qb1 0-0 13. Rfd1 Nb4 14. Nc4 Rc8 15. a3 Nc6 16. d4 cxd4 17. Nxd4 Qe8 18. Nb5 Na5 19. Nbd6 Bxd6 20. Nxd6 Rxc1 21. Qxc1 Qb8 22. Nxb7 Nxb7 23. Bxf6 gxf6 24. Qxh6 Rd8 25. Rxd8+ Nxd8 26. Qxf6 Qd6 27. h4 Nc6 28. h5 Qxa3 29. h6 Qc1+ 30. Kh2 Kf8 31. h7 Ke8 1-0

[Event "St Martin op"]
[Site "St Martin"]
[Date "1991.??.??"]
[Round "4"]
[White "Mengarini, Ariel"]
[Black "Poley, Vladimir"]
[Result "1-0"]
[ECO "A09"]
[WhiteElo "2220"]
[BlackElo "2445"]
[PlyCount "81"]
[EventDate "1991.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "FRA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. Nf3 d5 2. c4 d4 3. e3 Nc6 4. exd4 Nxd4 5. Be2 g6 6. Nxd4 Qxd4 7. Na3 Bg7 8. Nc2 Qb6 9. d4 Nh6 10. 0-0 0-0 11. c5 Qf6 12. Be3 c6 13. Qd2 Bf5 14. Bg5 Qe6 15. Na3 Rad8 16. Bc4 Qe4 17. Bxh6 Rxd4 18. Qg5 Bxh6 19. Qxh6 Rxc4 20. Nxc4 Qxc4 21. Qe3 Qe6 22. Qc3 Qc8 23. Rfe1 Be6 24. Rad1 Re8 25. Rd3 Bd5 26. a3 e6 27. Ree3 Qd8 28. Rh3 f6 29. Rhg3 Qe7 30. h4 Kf7 31. Qc1 Rg8 32. Qh6 Rg7 33. b4 a6 34. f4 f5 35. h5 Qf6 36. hxg6+ hxg6 37. Rh3 Qa1+ 38. Kh2 Qf6 39. Qh8 Rg8 40. Rh7+ Rg7 41. Rdh3 1-0

[Event "St Martin op"]
[Site "St Martin"]
[Date "1991.??.??"]
[Round "9"]
[White "Mengarini, Ariel"]
[Black "Todorcevic, Miodrag"]
[Result "0-1"]
[ECO "B08"]
[WhiteElo "2300"]
[BlackElo "2480"]
[PlyCount "96"]
[EventDate "1991.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "FRA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. Nf3 g6 2. d4 Bg7 3. e4 d6 4. Nc3 Nf6 5. h3 0-0 6. Be3 c6 7. Qd2 Nbd7 8. a4 e5 9. dxe5 dxe5 10. Rd1 Qe7 11. Qd6 Qxd6 12. Rxd6 Re8 13. Bc4 Bf8 14. Rd2 Bb4 15. Ng5 Re7 16. Bd3 h6 17. Nf3 Kg7 18. Ke2 a5 19. Rdd1 Nc5 20. Nd2 Nfd7 21. Ndb1 Nxd3 22. cxd3 b6 23. Nd2 Ba6 24. Nc4 Rb8 25. Na2 Bc5 26. Rc1 Bd4 27. Bxd4 exd4 28. b4 f5 29. f3 Rf8 30. Kd2 fxe4 31. dxe4 c5 32. b5 Bb7 33. Rce1 Ne5 34. Nxb6 Rf6 35. Nd5 Bxd5 36. exd5 Rd6 37. Kc2 Kf6 38. Nc1 Rxd5 39. Nd3 Nc4 40. Rxe7 Kxe7 41. Nf4 Ne3+ 42. Kd3 Rd7 43. Nxg6+ Kf6 44. Nf4 c4+ 45. Ke4 Nc2 46. Rb1 d3 47. Nd5+ Ke6 48. Nc3 Rd4# 0-1

[Event "St Martin op"]
[Site "St Martin"]
[Date "1991.??.??"]
[Round "7"]
[White "Michel Yunis, Christian D"]
[Black "Mengarini, Ariel"]
[Result "1/2-1/2"]
[ECO "C45"]
[WhiteElo "2150"]
[BlackElo "2220"]
[PlyCount "103"]
[EventDate "1991.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "FRA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Nb3 Bb6 6. a4 Qh4 7. Qe2 Nf6 8. a5 Nd4 9. Nxd4 Bxd4 10. c3 Bc5 11. b4 Be7 12. Nd2 d6 13. g3 Qg4 14. Qxg4 Bxg4 15. Bg2 Nd7 16. f4 f6 17. 0-0 0-0-0 18. Re1 Rhe8 19. Bb2 Bf8 20. c4 Kb8 21. Bc3 Be6 22. Reb1 g5 23. Bd4 Bh6 24. Be3 Rg8 25. Kf2 gxf4 26. gxf4 Ne5 27. fxe5 Bxe3+ 28. Kxe3 Rxg2 29. exf6 Rf8 30. Rg1 Rxh2 31. Rh1 Rxh1 32. Rxh1 Rf7 33. Rh6 b6 34. axb6 cxb6 35. Kd4 a5 36. bxa5 bxa5 37. Nf3 Rc7 38. Ng5 Bxc4 39. Rxh7 Rc8 40. Rd7 a4 41. Rxd6 a3 42. Ke5 a2 43. Rd1 Rc5+ 44. Kf4 Rb5 45. f7 Bxf7 46. Nxf7 Rb1 47. Rd8+ Ka7 48. Rd7+ Rb7 49. Rd1 Rxf7+ 50. Ke5 Kb8 51. Ra1 Rf2 52. Kd4 1/2-1/2

[Event "St Martin op"]
[Site "St Martin"]
[Date "1991.??.??"]
[Round "5"]
[White "Rausis, Igors"]
[Black "Mengarini, Ariel"]
[Result "1-0"]
[ECO "C68"]
[WhiteElo "2440"]
[BlackElo "2300"]
[PlyCount "65"]
[EventDate "1991.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "FRA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 bxc6 5. d4 exd4 6. Qxd4 Nf6 7. Bg5 Be7 8. Nc3 0-0 9. 0-0-0 d6 10. e5 Ne8 11. h4 Be6 12. Rhe1 d5 13. Na4 g6 14. Bxe7 Qxe7 15. Qc5 Qxc5 16. Nxc5 Bg4 17. Rd3 Bxf3 18. Rxf3 Ng7 19. Nd7 Rfd8 20. Nf6+ Kh8 21. Rc3 Nf5 22. Rxc6 Ra7 23. Rd1 Ne7 24. Rc5 c6 25. h5 g5 26. h6 Rc7 27. Rd4 Ng8 28. Rdxd5 Rxd5 29. Nxd5 Rd7 30. Nf6 Rc7 31. Rc3 Re7 32. Nxg8 Kxg8 33. Rxc6 1-0

[Event "St Martin op"]
[Site "St Martin"]
[Date "1991.??.??"]
[Round "3"]
[White "Wedberg, Tom"]
[Black "Mengarini, Ariel"]
[Result "1-0"]
[ECO "C90"]
[WhiteElo "2465"]
[BlackElo "2220"]
[PlyCount "69"]
[EventDate "1991.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "FRA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 Na5 9. Bc2 c5 10. d4 Qc7 11. Nbd2 Bg4 12. h3 Bh5 13. d5 g5 14. g4 Bg6 15. Nf1 h5 16. N3h2 hxg4 17. hxg4 0-0-0 18. a4 c4 19. axb5 axb5 20. b4 cxb3 21. Bd3 Rh3 22. f3 Rdh8 23. Be3 Bd8 24. Bxb5 Qb8 25. c4 Bb6 26. Qd2 Qc7 27. Bxb6 Qxb6+ 28. Kg2 Nb7 29. Ra3 Qc5 30. Qb2 Qb4 31. Re3 Nc5 32. Rexb3 Nxb3 33. Rxb3 Qc5 34. Bc6 Nd7 35. Rb7 1-0

[Event "Philadelphia op2"]
[Site "Philadelphia"]
[Date "1990.??.??"]
[Round "?"]
[White "Bonin, Jay R"]
[Black "Mengarini, Ariel"]
[Result "0-1"]
[ECO "D55"]
[WhiteElo "2385"]
[BlackElo "2230"]
[PlyCount "46"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Nc3 Be7 5. Bg5 0-0 6. e3 Ne4 7. Bxe7 Qxe7 8. cxd5 Nxc3 9. bxc3 exd5 10. Qb3 Rd8 11. c4 Be6 12. Qxb7 Qa3 13. Nd2 dxc4 14. Be2 Bd5 15. Qb1 Qa5 16. Qc1 c5 17. 0-0 cxd4 18. Nxc4 Qa6 19. exd4 Nc6 20. Rd1 Rac8 21. Bf1 Nb8 22. Rb1 Bxc4 23. Rxb8 Bxf1 0-1

[Event "World op 18th"]
[Site "Philadelphia"]
[Date "1990.??.??"]
[Round "?"]
[White "Getz, Shelby D"]
[Black "Mengarini, Ariel"]
[Result "0-1"]
[ECO "B02"]
[WhiteElo "2295"]
[BlackElo "2230"]
[PlyCount "84"]
[EventDate "1990.06.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nf6 3. e5 Nd5 4. Nc3 Nxc3 5. bxc3 d5 6. d4 Bg4 7. Be2 e6 8. h3 Bxf3 9. Bxf3 Qa5 10. Bd2 c4 11. 0-0 Nd7 12. Bg4 Be7 13. f4 g6 14. Bf3 h5 15. a4 Qc7 16. f5 0-0-0 17. fxe6 fxe6 18. Qe1 Rdg8 19. g3 Rh7 20. Qe2 Kb8 21. Kg2 Nb6 22. Kh2 Qd7 23. a5 Nc8 24. g4 h4 25. g5 Bd8 26. Bg4 Ne7 27. a6 b6 28. Rfb1 Nf5 29. Qg2 Rf8 30. Bc1 Be7 31. Be2 Rhf7 32. Bxc4 Qc7 33. Bd3 Qxc3 34. Bb2 Qc7 35. Qg4 Qd8 36. Bc1 Qc7 37. Bd2 Nxd4 38. Qxd4 Rf2+ 39. Kh1 Rxd2 40. Rf1 Qd8 41. Rxf8 Qxf8 42. Rf1 Qxf1+ 0-1

[Event "World op 18th"]
[Site "Philadelphia"]
[Date "1990.??.??"]
[Round "1"]
[White "Ivanov, Igor Vasilievich"]
[Black "Mengarini, Ariel"]
[Result "1-0"]
[ECO "A87"]
[WhiteElo "2495"]
[BlackElo "2230"]
[PlyCount "73"]
[EventDate "1990.06.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. Nf3 f5 2. c4 Nf6 3. d4 g6 4. Nc3 Bg7 5. g3 0-0 6. Bg2 d6 7. d5 h6 8. 0-0 e5 9. dxe6 Nc6 10. Qb3 Bxe6 11. Qxb7 Na5 12. Qa6 c5 13. Rd1 Nxc4 14. Nh4 g5 15. Nxf5 Rb8 16. Nxg7 Kxg7 17. b3 Rb6 18. Qa4 Rb4 19. Qxa7+ Rf7 20. Qxc5 Qb8 21. Qd4 Nb2 22. Bxb2 Rxd4 23. Rxd4 Kh7 24. Rad1 Ne8 25. b4 Rc7 26. Nd5 Ra7 27. a3 Qb5 28. Nc3 Qb6 29. a4 Bb3 30. a5 Qa6 31. R1d3 Bc4 32. Be4+ Kh8 33. Rxd6 Bxd3 34. Rxa6 Bxa6 35. Nb5+ Rg7 36. Bc6 Bxb5 37. Bxb5 1-0

[Event "World op 18th"]
[Site "Philadelphia"]
[Date "1990.??.??"]
[Round "6"]
[White "Mengarini, Ariel"]
[Black "Beckman, Thomas J"]
[Result "0-1"]
[ECO "A20"]
[WhiteElo "2230"]
[BlackElo "2280"]
[PlyCount "46"]
[EventDate "1990.06.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. c4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Nxc6 Qf6 6. e3 Qxc6 7. a3 a5 8. Nc3 Nf6 9. b3 0-0 10. Bb2 Re8 11. Nd5 Nxd5 12. cxd5 Qg6 13. Qd2 d6 14. Bd3 Bf5 15. Bxf5 Qxf5 16. 0-0 Qg5 17. Rae1 f5 18. f4 Qh6 19. Rf3 Re7 20. Rh3 Qxf4 21. Kh1 Rae8 22. Qc3 Qf2 23. Rg3 Bd4 0-1

[Event "World op 18th"]
[Site "Philadelphia"]
[Date "1990.??.??"]
[Round "?"]
[White "Mengarini, Ariel"]
[Black "Friedman, Aviv"]
[Result "1-0"]
[ECO "A39"]
[WhiteElo "2230"]
[BlackElo "2350"]
[PlyCount "105"]
[EventDate "1990.06.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 c5 3. Nc3 g6 4. d4 cxd4 5. Nxd4 Bg7 6. g3 0-0 7. Bg2 Nc6 8. 0-0 Nxd4 9. Qxd4 d6 10. b3 d5 11. cxd5 e6 12. Qf4 Nxd5 13. Nxd5 Bxa1 14. Nc7 Rb8 15. Ba3 Bg7 16. Bxf8 Bxf8 17. Ne8 Ra8 18. Nf6+ Kg7 19. Ng4 h5 20. Ne3 Qa5 21. Rc1 Qxa2 22. Qd4+ Kg8 23. Qd8 Qxb3 24. Rxc8 Qb1+ 25. Nf1 Rxc8 26. Qxc8 b5 27. Qb7 a5 28. Bc6 b4 29. Be8 Qf5 30. Ne3 Qf6 31. Nc4 a4 32. Ne5 Kg7 33. f4 a3 34. Bxf7 Be7 35. Qa8 Bf8 36. Qa4 Bd6 37. Qd7 Bxe5 38. Bxe6+ Kh6 39. fxe5 Qxe5 40. Qd2+ Kg7 41. Bb3 Qc3 42. Qd7+ Kh6 43. Qe6 h4 44. Kf2 hxg3+ 45. hxg3 Qc7 46. Qe3+ Kh7 47. Qd4 Qa5 48. Qh4+ Kg7 49. Qe7+ Kh6 50. Qf8+ Kh5 51. Qh8+ Kg5 52. Qh4+ Kf5 53. Qf4# 1-0

[Event "New York State-ch 112th"]
[Site "Albany"]
[Date "1989.??.??"]
[Round "?"]
[White "Edelman, Daniel"]
[Black "Mengarini, Ariel"]
[Result "0-1"]
[ECO "B29"]
[WhiteElo "2350"]
[BlackElo "2225"]
[PlyCount "106"]
[EventDate "1989.09.02"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nf6 3. e5 Nd5 4. Nc3 Nxc3 5. dxc3 Nc6 6. Bc4 Qc7 7. Bf4 e6 8. Qe2 b6 9. Bg3 Bb7 10. h4 h6 11. h5 0-0-0 12. Rh4 d5 13. exd6 Bxd6 14. Rg4 Bxg3 15. Rxg3 Rhg8 16. Rd1 Rxd1+ 17. Kxd1 Qf4 18. Bxe6+ Kb8 19. Bb3 Rd8+ 20. Nd2 Ne5 21. Qe3 Qf5 22. f4 Ng4 23. Qe2 Qxf4 24. Rxg4 Rxd2+ 25. Qxd2 Qxg4+ 26. Ke1 Qh4+ 27. Qf2 Qh1+ 28. Kd2 Qxg2 29. Qxg2 Bxg2 30. Bxf7 Kc7 31. Ke3 Kd6 32. Kf4 Ke7 33. Bg6 Kf6 34. a3 Bf1 35. Be8 Be2 36. Bg6 Bd1 37. b3 Be2 38. Ke3 Bg4 39. Kf4 Bd1 40. b4 a5 41. b5 Be2 42. Ke4 Bxb5 43. Kd5 Ke7 44. Bd3 Be8 45. Be2 g5 46. hxg6 Bxg6 47. Kc6 a4 48. Kxb6 Kd6 49. Bd1 h5 50. Kb5 Be8+ 51. Kc4 h4 52. Kd3 h3 53. Ke3 h2 0-1

[Event "Washington DC op"]
[Site "Washington DC"]
[Date "1987.??.??"]
[Round "?"]
[White "Mengarini, Ariel"]
[Black "Donaldson, John W"]
[Result "0-1"]
[ECO "B50"]
[WhiteElo "2210"]
[BlackElo "2410"]
[PlyCount "84"]
[EventDate "1987.02.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bc4 Nc6 4. 0-0 Nf6 5. Re1 Bg4 6. c3 e6 7. d3 Be7 8. Nbd2 0-0 9. Bb3 Qc7 10. h3 Bh5 11. g4 Bg6 12. Nh4 d5 13. Nxg6 hxg6 14. Qe2 dxe4 15. dxe4 Nd7 16. Nf1 Bd6 17. Bg5 Bf4 18. Bh4 Nce5 19. Bg3 Bxg3 20. Nxg3 c4 21. Bc2 Nc5 22. Rf1 g5 23. b4 Ncd3 24. Qe3 Nf4 25. Ne2 Nxe2+ 26. Qxe2 Ng6 27. Rad1 Nf4 28. Qe3 g6 29. e5 Kg7 30. h4 Qe7 31. Rd4 Rh8 32. hxg5 Nd5 33. Qd2 Rh4 34. Kg2 Rah8 35. Rxc4 b5 36. Re4 Rh2+ 37. Kf3 Nxc3 38. Rg1 Qc7 39. Rd4 Qxe5 40. Qxc3 R8h3+ 41. Rg3 Rxg3+ 42. fxg3 Qe2+ 0-1

[Event "US Open-87"]
[Site "Somerset"]
[Date "1986.??.??"]
[Round "12"]
[White "Mengarini, Ariel"]
[Black "Tseshkovsky, Vitaly"]
[Result "0-1"]
[ECO "B88"]
[WhiteElo "2215"]
[BlackElo "2505"]
[PlyCount "84"]
[EventDate "1986.08.03"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bc4 Nf6 4. Nc3 e6 5. d4 cxd4 6. Nxd4 Be7 7. 0-0 0-0 8. Bb3 Nc6 9. f4 Na5 10. Be3 Bd7 11. Qe2 Rc8 12. Rad1 Nxb3 13. axb3 Qc7 14. Ndb5 Bxb5 15. Qxb5 a6 16. Qe2 b5 17. Rc1 b4 18. Na4 Qb7 19. e5 dxe5 20. fxe5 Nd5 21. Bd2 Rc7 22. Rf3 Rfc8 23. Qe4 Bf8 24. Rh3 g6 25. Bh6 Bxh6 26. Rxh6 Qa7+ 27. Kh1 Qf2 28. Qh4 Rxc2 29. Rg1 Qxh4 30. Rxh4 Re2 31. Rc4 Ra8 32. Rc5 a5 33. h3 Kg7 34. Rf1 Ra7 35. Rb5 Rxe5 36. Nb6 Rb7 37. Nc4 Rxb5 38. Nxe5 Ne3 39. Rxf7+ Kg8 40. Nc4 Nxc4 41. bxc4 Kxf7 42. cxb5 Ke7 0-1

[Event "US Open-87"]
[Site "Somerset"]
[Date "1986.??.??"]
[Round "11"]
[White "Zlotnikov, Mikhail"]
[Black "Mengarini, Ariel"]
[Result "0-1"]
[ECO "A25"]
[WhiteElo "2350"]
[BlackElo "2215"]
[PlyCount "114"]
[EventDate "1986.08.03"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 d6 6. 0-0 Bg4 7. h3 Bd7 8. d4 Nxd4 9. Nxd4 exd4 10. Nb5 Bc6 11. Bxc6+ bxc6 12. Nxd4 Qd7 13. Kg2 Ne7 14. Rb1 Nf5 15. Nf3 c5 16. b3 0-0 17. Bb2 Rfe8 18. Bxg7 Kxg7 19. Qd5 Qe6 20. Rb2 a5 21. Re1 Qxd5 22. cxd5 Re4 23. e3 a4 24. Ree2 axb3 25. axb3 Ra3 26. Ra2 Rxa2 27. Rxa2 Rb4 28. Ra7 Rxb3 29. Rxc7 Rb2 30. e4 Ne3+ 31. Kg1 Rb1+ 32. Kh2 Rf1 33. g4 Rxf2+ 34. Kg3 Rf1 35. e5 dxe5 36. d6 Nc4 37. Ng5 Nxd6 38. Ne6+ Kf6 39. Nxc5 e4 40. Nd7+ Ke6 41. Nf8+ Kd5 42. Kg2 Rf4 43. Nxh7 e3 44. Rc1 Ne4 45. Rf1 Rxf1 46. Kxf1 Ke5 47. Nf8 Kf4 48. Nd7 Nc3 49. Ke1 Kg3 50. Ne5 f5 51. Nxg6 f4 52. Ne5 Ne4 53. Ke2 Nc3+ 54. Ke1 f3 55. Nxf3 Kxf3 56. g5 Ne4 57. g6 Nf6 0-1

[Event "New York op"]
[Site "New York"]
[Date "1985.??.??"]
[Round "9"]
[White "Gertler, David"]
[Black "Mengarini, Ariel"]
[Result "1-0"]
[ECO "C20"]
[WhiteElo "2265"]
[BlackElo "2240"]
[PlyCount "41"]
[EventDate "1985.03.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Ne2 Nf6 3. Nbc3 Nc6 4. g3 h5 5. h3 Bc5 6. Bg2 d6 7. d3 Be6 8. Bg5 Qd7 9. Nd5 Nh7 10. Be3 Bxe3 11. Nxe3 0-0-0 12. d4 exd4 13. Nxd4 Kb8 14. f4 f6 15. Qd2 g5 16. 0-0-0 h4 17. f5 Bf7 18. Nxc6+ Qxc6 19. e5 Qa4 20. e6 Qxa2 21. Qb4 1-0

[Event "New York op"]
[Site "New York"]
[Date "1985.??.??"]
[Round "4"]
[White "Mengarini, Ariel"]
[Black "Remlinger, Larry"]
[Result "0-1"]
[ECO "B16"]
[WhiteElo "2240"]
[BlackElo "2380"]
[PlyCount "41"]
[EventDate "1985.03.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ gxf6 6. Nf3 Bg4 7. Be2 Qc7 8. Nh4 Bxe2 9. Qxe2 Nd7 10. g3 0-0-0 11. Qh5 e5 12. Qxf7 exd4 13. 0-0 c5 14. Re1 Qc6 15. Nf5 Ne5 16. Rxe5 fxe5 17. Bg5 Qd7 18. Qxd7+ Rxd7 19. Re1 Rg8 20. f4 Rd5 21. Bh6 0-1

[Event "New York op"]
[Site "New York"]
[Date "1985.??.??"]
[Round "8"]
[White "Mengarini, Ariel"]
[Black "Russek Libni, Guil"]
[Result "0-1"]
[ECO "C05"]
[WhiteElo "2240"]
[BlackElo "2280"]
[PlyCount "40"]
[EventDate "1985.03.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. c3 c5 6. f4 Nc6 7. Ndf3 Qb6 8. Nh3 cxd4 9. cxd4 Bb4+ 10. Kf2 f6 11. Be3 0-0 12. Bd3 fxe5 13. fxe5 Be7 14. Qc2 Nxd4 15. Bxh7+ Kh8 16. Qd2 Nxf3 17. gxf3 d4 18. Bg5 Bb4 19. Qd3 Nxe5 20. Qe4 Nxf3 0-1

[Event "Northwest Chess November op"]
[Site "Seattle"]
[Date "1983.11.??"]
[Round "?"]
[White "Donaldson, John W"]
[Black "Mengarini, Ariel"]
[Result "1-0"]
[ECO "A27"]
[WhiteElo "2405"]
[BlackElo "2210"]
[PlyCount "65"]
[EventDate "1983.11.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 g6 4. d4 exd4 5. Nxd4 Bg7 6. Nxc6 bxc6 7. g3 Ne7 8. Bg2 0-0 9. 0-0 d6 10. Bd2 Be6 11. Qa4 Qd7 12. Rfd1 a5 13. Rac1 Ra6 14. c5 d5 15. e4 dxe4 16. Bh6 Qc8 17. Bxg7 Kxg7 18. Bxe4 Qb7 19. Qd4+ f6 20. Re1 Qc8 21. Bd3 Ra8 22. Qe4 Bf7 23. Bc4 Nf5 24. Bxf7 Rxf7 25. Qxc6 Rb8 26. b3 h5 27. Rcd1 h4 28. Nd5 a4 29. Qxa4 Ra8 30. Qg4 hxg3 31. hxg3 Rxa2 32. Nf4 g5 33. Rd8 1-0

[Event "Biel-16 Open"]
[Site "Biel"]
[Date "1983.07.??"]
[Round "?"]
[White "Bukal, Vladimir Sr"]
[Black "Mengarini, Ariel"]
[Result "1-0"]
[ECO "A21"]
[BlackElo "2210"]
[PlyCount "85"]
[EventDate "1983.07.17"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "SUI"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 d6 3. d4 exd4 4. Qxd4 Nc6 5. Qd2 Nf6 6. g3 Be6 7. Nd5 Ne5 8. b3 Ne4 9. Qe3 Nc5 10. Bb2 c6 11. Nf4 Be7 12. Nxe6 Nxe6 13. Bh3 Bf6 14. Bxe6 fxe6 15. f4 Qa5+ 16. Kf1 0-0 17. Bc3 Qb6 18. c5 Qxc5 19. Qxc5 dxc5 20. Bxe5 Bxe5 21. Rd1 Bf6 22. e4 Rad8 23. Rxd8 Rxd8 24. e5 Be7 25. Ke2 c4 26. bxc4 Rd4 27. Nf3 Rxc4 28. Rd1 Rc2+ 29. Kf1 h6 30. Rd7 Bc5 31. Nd2 Rxa2 32. Ne4 Bb6 33. Nd6 Rf2+ 34. Ke1 Rxh2 35. f5 Bf2+ 36. Kf1 Bxg3 37. fxe6 Bh4 38. e7 Bxe7 39. Rxe7 Rh5 40. e6 Rd5 41. Re8+ Kh7 42. Nc8 Rf5+ 43. Kg2 1-0

[Event "Biel-14 MTO op"]
[Site "Biel"]
[Date "1981.07.??"]
[Round "1"]
[White "Mengarini, Ariel"]
[Black "Busch"]
[Result "0-1"]
[ECO "C10"]
[WhiteElo "2225"]
[PlyCount "62"]
[EventDate "1981.07.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "SUI"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Nxf6+ Nxf6 7. Bg5 h6 8. Bh4 Be7 9. c3 0-0 10. Bd3 c5 11. dxc5 Qc7 12. 0-0 Qxc5 13. Re1 b6 14. Ne5 Bb7 15. Qa4 g5 16. Bg3 a6 17. Rad1 b5 18. Qb3 Bd5 19. Qc2 Qc8 20. f3 Nh5 21. Bh7+ Kh8 22. Bf2 Bc5 23. Nxf7+ Rxf7 24. Bg6 Rxf3 25. gxf3 Nf4 26. Bd4+ Bxd4+ 27. cxd4 Bxf3 28. Rc1 Qf8 29. Bd3 Nh3+ 30. Kf1 Bd1+ 31. Kg2 Qf3# 0-1

[Event "Biel-14 MTO op"]
[Site "Biel"]
[Date "1981.07.??"]
[Round "1"]
[White "Mengarini, Ariel"]
[Black "Hoffmann"]
[Result "1-0"]
[ECO "B21"]
[WhiteElo "2225"]
[PlyCount "51"]
[EventDate "1981.07.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "SUI"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. f4 e6 3. Nf3 a6 4. c3 d5 5. e5 Nc6 6. Na3 c4 7. Nc2 Bc5 8. d4 cxd3 9. Bxd3 Nh6 10. Be3 Bxe3 11. Nxe3 0-0 12. Qc2 g6 13. 0-0-0 Bd7 14. Kb1 b5 15. h4 b4 16. h5 Kg7 17. g4 bxc3 18. hxg6 hxg6 19. f5 exf5 20. gxf5 f6 21. Rdg1 Ne7 22. Rxh6 Kxh6 23. Ng4+ Kg7 24. exf6+ Rxf6 25. Nxf6 Kxf6 26. Qxc3+ 1-0

[Event "Biel-14 MTO op"]
[Site "Biel"]
[Date "1981.07.??"]
[Round "1"]
[White "Mengarini, Ariel"]
[Black "Meduna, Eduard"]
[Result "0-1"]
[ECO "B17"]
[WhiteElo "2225"]
[BlackElo "2450"]
[PlyCount "74"]
[EventDate "1981.07.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "SUI"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Nxf6+ Nxf6 7. Ne5 Be6 8. Be2 g6 9. 0-0 Bg7 10. c4 0-0 11. Be3 Qc7 12. b4 Rfd8 13. Qc2 a5 14. a3 Nd7 15. Nd3 Bf5 16. Rac1 axb4 17. axb4 Nf8 18. Qc3 Bxd3 19. Qxd3 Bxd4 20. Qxd4 Rxd4 21. Bxd4 e5 22. Ra1 Rxa1 23. Bxa1 Ne6 24. Rd1 Kg7 25. Bf1 b6 26. g3 c5 27. bxc5 bxc5 28. Bg2 Nd4 29. Bd5 Qb6 30. Kg2 Qb3 31. Re1 f6 32. Re3 Qa2 33. Bc3 Nf5 34. Re1 Qc2 35. Ba5 Ne7 36. Be6 Qa4 37. Bd8 Qa8+ 0-1

[Event "Biel-14 MTO op"]
[Site "Biel"]
[Date "1981.07.??"]
[Round "1"]
[White "Nautsch, Werner"]
[Black "Mengarini, Ariel"]
[Result "1-0"]
[ECO "A03"]
[WhiteElo "2340"]
[BlackElo "2225"]
[PlyCount "71"]
[EventDate "1981.07.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "SUI"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. f4 d5 2. Nf3 g6 3. g3 Bg7 4. Bg2 c5 5. Nc3 Nf6 6. d3 d4 7. Ne4 Nxe4 8. dxe4 0-0 9. 0-0 Nc6 10. Rb1 e5 11. e3 Be6 12. a3 Bc4 13. Re1 d3 14. Bf1 dxc2 15. Qxc2 Bxf1 16. Rxf1 exf4 17. exf4 Nd4 18. Qf2 Qe7 19. e5 Nxf3+ 20. Qxf3 Rad8 21. Be3 f6 22. b4 cxb4 23. Bxa7 fxe5 24. Rxb4 Rd7 25. Qe3 Re8 26. Re4 Qd8 27. Bb6 Qb8 28. Re1 Rde7 29. Qb3+ Kh8 30. Qd5 Qa8 31. a4 Qa6 32. a5 Rf8 33. Bd4 Qd3 34. Rxe5 Rxe5 35. Rxe5 Rc8 36. Re8+ 1-0

[Event "Caorle op"]
[Site "Caorle"]
[Date "1981.??.??"]
[Round "4"]
[White "Kariz, Peter"]
[Black "Mengarini, Ariel"]
[Result "1/2-1/2"]
[ECO "C41"]
[BlackElo "2225"]
[PlyCount "123"]
[EventDate "1981.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 Nf6 4. Nc3 Nbd7 5. Bc4 h6 6. Bb3 Be7 7. h3 c6 8. Be3 Qc7 9. g4 g5 10. h4 Nxg4 11. hxg5 Nxe3 12. fxe3 h5 13. Qd2 Nf8 14. 0-0-0 Bg4 15. Rdf1 Rh7 16. Nh2 Bd7 17. Qf2 Ne6 18. Ng4 exd4 19. Nf6+ Bxf6 20. Qxf6 Qd8 21. exd4 Qxf6 22. Rxf6 Ke7 23. Bxe6 Bxe6 24. d5 Bg4 25. e5 dxe5 26. Re1 cxd5 27. Rxe5+ Kf8 28. Nxd5 Rg7 29. Rf4 Rd8 30. c4 Rg6 31. Re7 Be6 32. Rxb7 Rxg5 33. Rxa7 Rg4 34. Ra4 h4 35. Rxg4 Bxg4 36. Ne3 Be6 37. c5 h3 38. Nf1 Rd5 39. Rf4 Rxc5+ 40. Kd2 Bxa2 41. Rh4 Be6 42. b4 Re5 43. Ne3 Kg7 44. Ke2 Kg6 45. Kf3 Kg5 46. Rh8 Rb5 47. Rg8+ Kf6 48. Ng4+ Ke7 49. Rh8 Rxb4 50. Nf2 Rb3+ 51. Kf4 Kf6 52. Rh6+ Kg7 53. Rh4 Rb4+ 54. Kg3 Rxh4 55. Kxh4 Kf6 56. Kg3 Ke5 57. Nh1 Ke4 58. Nf2+ Ke3 59. Nd1+ Ke2 60. Nc3+ Kf1 61. Ne4 Ke2 62. Ng5 1/2-1/2

[Event "Caorle op"]
[Site "Caorle"]
[Date "1981.??.??"]
[Round "3"]
[White "Klinth, Jorgen"]
[Black "Mengarini, Ariel"]
[Result "0-1"]
[ECO "B54"]
[BlackElo "2225"]
[PlyCount "54"]
[EventDate "1981.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 d6 4. d4 cxd4 5. Nxd4 Bd7 6. Be2 a6 7. a4 e6 8. 0-0 Qc7 9. Be3 Be7 10. Kh1 Na5 11. Qd3 Rc8 12. f4 Nf6 13. f5 Nc4 14. Bc1 0-0 15. Qg3 Kh8 16. Bd3 Qb6 17. Nb3 exf5 18. exf5 d5 19. Qf2 Qb4 20. Qd4 Bc6 21. a5 Rfe8 22. Na2 Qd6 23. Bf4 Qd8 24. c3 Nxb2 25. Nb4 Bxb4 26. cxb4 Nxd3 27. Qxd3 Bb5 0-1

[Event "Caorle op"]
[Site "Caorle"]
[Date "1981.??.??"]
[Round "9"]
[White "Kuzmanovic, Nenad"]
[Black "Mengarini, Ariel"]
[Result "1-0"]
[ECO "C54"]
[BlackElo "2225"]
[PlyCount "81"]
[EventDate "1981.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 Nf6 5. 0-0 d6 6. c3 a6 7. b4 Ba7 8. a4 0-0 9. Bg5 Qe7 10. Nbd2 Nd8 11. Nh4 Kh8 12. Qf3 Ne6 13. Bxf6 Qxf6 14. Qxf6 gxf6 15. Ra3 Ng7 16. Kh1 f5 17. f4 Be3 18. Ndf3 exf4 19. e5 Be6 20. Raa1 Rad8 21. Rad1 d5 22. Ba2 Nh5 23. d4 f6 24. Bb1 fxe5 25. Nxe5 Rf6 26. Rf3 Rdf8 27. Rh3 Kg8 28. Nhf3 Ng7 29. Ng5 h6 30. Ngf3 Ne8 31. Nh4 Kh7 32. Ng4 R6f7 33. Nxe3 fxe3 34. Rxe3 Bd7 35. g4 Nd6 36. gxf5 Ne4 37. Bxe4 dxe4 38. Ng6 Rg8 39. Ne5 Bxa4 40. Rf1 Bc2 41. Nxf7 1-0

[Event "Caorle op"]
[Site "Caorle"]
[Date "1981.??.??"]
[Round "6"]
[White "Mengarini, Ariel"]
[Black "Djordjevic, Slobodan"]
[Result "0-1"]
[ECO "C05"]
[WhiteElo "2225"]
[PlyCount "102"]
[EventDate "1981.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. c3 b6 6. Qg4 c5 7. Ngf3 Qc7 8. a3 c4 9. Be2 a5 10. Nf1 Nc6 11. Bf4 Bb7 12. Ng5 h6 13. Nxe6 fxe6 14. Qxe6+ Ne7 15. Bh5+ g6 16. Bxg6+ Kd8 17. Bh5 Rh7 18. Ne3 Qc6 19. Qh3 Bc8 20. Qh4 Nb8 21. Nxd5 Be6 22. Ne3 Kc8 23. 0-0 Na6 24. Bf3 Nd5 25. Bg3 Nac7 26. Be4 Be7 27. Qh5 Rh8 28. f4 Qb5 29. Nxd5 Bxd5 30. Bxd5 Nxd5 31. Rf2 Kb7 32. f5 Bg5 33. Re2 Rhf8 34. Qf3 Rae8 35. Rf1 Ka7 36. h4 Bd8 37. Qh5 Qc6 38. e6 Rg8 39. Rf3 Nf6 40. Qxh6 Rg4 41. Qe3 Nd5 42. Qf2 Reg8 43. h5 Bf6 44. h6 Qb7 45. Be5 Qh7 46. Bxf6 Nxf6 47. Qe3 Re4 48. Qxe4 Nxe4 49. Rxe4 Qxh6 50. e7 Qc1+ 51. Rf1 Qc2 0-1

[Event "Caorle op"]
[Site "Caorle"]
[Date "1981.??.??"]
[Round "2"]
[White "Mengarini, Ariel"]
[Black "Grooten, Herman"]
[Result "0-1"]
[ECO "C00"]
[WhiteElo "2225"]
[PlyCount "80"]
[EventDate "1981.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. f4 e6 3. Nf3 d5 4. e5 h5 5. c3 Nh6 6. Na3 Be7 7. Nc2 Nf5 8. Ne3 g6 9. Nxf5 gxf5 10. h4 Nc6 11. Be2 d4 12. Ng5 Bxg5 13. hxg5 h4 14. g3 d3 15. Bf3 h3 16. b3 Bd7 17. Bb2 Na5 18. c4 Qb6 19. Bc3 Rd8 20. Bxa5 Qxa5 21. Bxb7 Qc7 22. Bf3 Bc6 23. Kf2 Rd4 24. Bxc6+ Qxc6 25. Qf3 Qb6 26. Rh2 Ke7 27. Kg1 Qa5 28. Qf1 Qd8 29. Re1 Re4 30. Rxe4 fxe4 31. Qf2 Qd4 32. Qxd4 cxd4 33. Kf2 a5 34. g4 Kd7 35. f5 exf5 36. gxf5 Rh5 37. Kg3 Rxg5+ 38. Kf4 Rg2 39. Rxh3 e3 40. dxe3 d2 0-1

[Event "Caorle op"]
[Site "Caorle"]
[Date "1981.??.??"]
[Round "8"]
[White "Mengarini, Ariel"]
[Black "Magrin, Antonio"]
[Result "1/2-1/2"]
[ECO "B15"]
[WhiteElo "2225"]
[BlackElo "2200"]
[PlyCount "119"]
[EventDate "1981.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 c6 4. Nf3 d5 5. h3 Nf6 6. e5 Nfd7 7. Bf4 Nf8 8. Qd2 h5 9. Be2 Ne6 10. Be3 Nd7 11. Rd1 Qa5 12. 0-0 b5 13. b3 Qc7 14. a4 b4 15. Na2 a5 16. c3 bxc3 17. Nxc3 Ba6 18. Rb1 0-0 19. Rfc1 Qa7 20. Ng5 Nxg5 21. Bxg5 e6 22. g4 Bxe2 23. Nxe2 hxg4 24. hxg4 c5 25. f4 Rfb8 26. Be7 c4 27. Bd6 Rc8 28. bxc4 dxc4 29. Nc3 Bf8 30. Nb5 Qa6 31. d5 exd5 32. Qxd5 Nb6 33. Qf3 Nxa4 34. Bxf8 Kxf8 35. Qa3+ Nc5 36. Nd6 Kg8 37. Rxc4 Ne6 38. Rxc8+ Rxc8 39. Nxc8 Qxc8 40. Qd6 Qc2 41. Rf1 Qe2 42. Qd1 Qe3+ 43. Kh2 Nxf4 44. Qf3 Qxf3 45. Rxf3 g5 46. Ra3 Kf8 47. Rxa5 Ke7 48. Kg3 Ke6 49. Kf3 Nd3 50. Ke4 Nf2+ 51. Kd4 Nxg4 52. Ra6+ Kf5 53. Ra5 Kf4 54. Ra1 Nxe5 55. Kc3 g4 56. Kd2 f5 57. Ke2 Nf3 58. Ra3 Ng5 59. Kf2 Ne4+ 60. Kg2 1/2-1/2

[Event "Caorle op"]
[Site "Caorle"]
[Date "1981.??.??"]
[Round "5"]
[White "Mengarini, Ariel"]
[Black "Radonjanin, Vlastimir"]
[Result "0-1"]
[ECO "C05"]
[WhiteElo "2225"]
[BlackElo "2225"]
[PlyCount "48"]
[EventDate "1981.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. c3 c5 6. f4 Nc6 7. Ndf3 Qa5 8. Kf2 b5 9. Be3 b4 10. c4 dxc4 11. d5 exd5 12. Qxd5 Bb7 13. Bxc4 Nd8 14. Qd3 Nb6 15. Rd1 Be7 16. Bb3 Rc8 17. Nd2 Bh4+ 18. g3 Bxh1 19. Nc4 Nxc4 20. Qd7+ Kf8 21. Bxc4 Rc7 22. Qf5 Be7 23. e6 Qb6 24. Nh3 g6 0-1

[Event "Caorle op"]
[Site "Caorle"]
[Date "1981.??.??"]
[Round "1"]
[White "Ponzetto, Pietro"]
[Black "Mengarini, Ariel"]
[Result "1/2-1/2"]
[ECO "D02"]
[BlackElo "2225"]
[PlyCount "54"]
[EventDate "1981.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 e6 3. g3 Nf6 4. Bg2 c5 5. 0-0 cxd4 6. Nxd4 Be7 7. c4 0-0 8. cxd5 Nxd5 9. e4 Nb4 10. a3 N4c6 11. Nb3 a5 12. Be3 a4 13. N3d2 b5 14. Qh5 Nd4 15. e5 Ra7 16. Nc3 Rd7 17. Bxd4 Rxd4 18. Nf3 Rd7 19. Rad1 Ba6 20. Rxd7 Nxd7 21. Rd1 Qc7 22. Ne4 Nb6 23. Nfg5 h6 24. Nf6+ gxf6 25. Qxh6 fxg5 26. Be4 f5 27. Qg6+ Kh8 1/2-1/2

[Event "Caorle op"]
[Site "Caorle"]
[Date "1981.??.??"]
[Round "7"]
[White "Turchi, Paolo"]
[Black "Mengarini, Ariel"]
[Result "0-1"]
[ECO "A26"]
[BlackElo "2225"]
[PlyCount "80"]
[EventDate "1981.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. g3 e5 2. Bg2 Nf6 3. c4 g6 4. Nc3 Bg7 5. Nf3 d6 6. 0-0 0-0 7. d3 Nc6 8. Rb1 Bg4 9. b4 a6 10. Ne1 Qd7 11. Bd2 Bh3 12. a4 Bxg2 13. Nxg2 Qh3 14. f3 Nd4 15. e3 Ne6 16. Qe2 Rad8 17. Nd1 Ng5 18. e4 Ne6 19. Nf2 Nd4 20. Nxh3 Nxe2+ 21. Kf2 Nd4 22. Ng1 Nd7 23. Ne2 f5 24. Nxd4 exd4 25. Nf4 Rde8 26. Ke2 c6 27. Kd1 fxe4 28. dxe4 Nb6 29. c5 Nxa4 30. Nd3 dxc5 31. bxc5 Rf7 32. Kc2 Bf8 33. Bb4 a5 34. Ba3 b6 35. cxb6 Bxa3 36. Ra1 Nxb6 37. Rxa3 Nc4 38. Raa1 Ne3+ 39. Kd2 Nxf1+ 40. Rxf1 Rxe4 0-1

[Event "New York int"]
[Site "New York"]
[Date "1980.??.??"]
[Round "?"]
[White "Mengarini, Ariel"]
[Black "Schiller, Eric Andrew"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "2215"]
[PlyCount "46"]
[EventDate "1980.??.??"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. d4 c6 5. Bc4 Nf6 6. Nge2 Bg4 7. f3 Bh5 8. Bf4 Qd8 9. Be5 Nbd7 10. Nf4 e6 11. Qe2 Qa5 12. g4 Bg6 13. h4 Bb4 14. h5 Nxe5 15. dxe5 Bxc3+ 16. bxc3 Qxc3+ 17. Kf2 0-0-0 18. hxg6 Nxg4+ 19. fxg4 Rd2 20. gxf7 Rxe2+ 21. Bxe2 Qxe5 22. Kf3 Rf8 23. Bc4 Rxf7 0-1

[Event "New York GHI"]
[Site "New York"]
[Date "1978.??.??"]
[Round "?"]
[White "Evans, Larry D"]
[Black "Mengarini, Ariel"]
[Result "1-0"]
[ECO "B28"]
[PlyCount "49"]
[EventDate "1978.07.08"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 a6 3. c3 d5 4. exd5 Qxd5 5. d4 e6 6. Nbd2 Nc6 7. Nc4 cxd4 8. Nb6 Qe4+ 9. Qe2 Qxe2+ 10. Bxe2 Rb8 11. Bf4 e5 12. Nxe5 Bd6 13. Nbc4 Bxe5 14. Nxe5 Ra8 15. Nxc6 bxc6 16. Be5 Nf6 17. Bxd4 0-0 18. 0-0-0 Be6 19. c4 c5 20. Be3 Ng4 21. Bxg4 Bxg4 22. Rd5 Rfc8 23. b3 a5 24. a4 Rab8 25. Kc2 1-0

[Event "New York GHI"]
[Site "New York"]
[Date "1978.??.??"]
[Round "?"]
[White "Mengarini, Ariel"]
[Black "Braun, Leslie"]
[Result "0-1"]
[ECO "C06"]
[PlyCount "83"]
[EventDate "1978.07.08"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ne2 cxd4 8. cxd4 Qb6 9. Nf3 f6 10. exf6 Nxf6 11. 0-0 Bd6 12. b3 0-0 13. Bb2 Bd7 14. Ng3 Rae8 15. Ne5 Bc8 16. Rc1 g6 17. Bb1 Bxe5 18. dxe5 Nd7 19. Qe2 Rf7 20. h4 Ne7 21. h5 Nf8 22. Qd2 Bd7 23. Bd4 Qd8 24. Bc5 a6 25. Qd4 Nf5 26. Qg4 Rg7 27. Rc3 Qb8 28. Re1 Rc8 29. Qg5 b6 30. Bxf8 Rxf8 31. h6 Rgf7 32. Bxf5 Rxf5 33. Nxf5 Rxf5 34. Qe7 Rf7 35. Qd6 Qd8 36. Rec1 Rf8 37. Rc7 Qh4 38. Qxf8+ Kxf8 39. Rxd7 Ke8 40. Rxh7 Kd8 41. Rh8+ Kd7 42. Rhc8 0-1

[Event "US Open-75"]
[Site "New York"]
[Date "1974.08.23"]
[Round "12"]
[White "Mengarini, Ariel"]
[Black "Ryznar, Vladimir"]
[Result "0-1"]
[ECO "B07"]
[PlyCount "76"]
[EventDate "1974.08.11"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Bg5 Bg7 5. e5 Nfd7 6. Nd5 Nc6 7. Bb5 f6 8. exf6 Nxf6 9. Nf4 0-0 10. Nf3 e5 11. Bxc6 exf4 12. Bd5+ Kh8 13. 0-0 h6 14. Bxf6 Qxf6 15. c3 g5 16. Re1 c6 17. Bb3 g4 18. Nd2 d5 19. Bc2 Bd7 20. Nb3 Qh4 21. Nc5 g3 22. fxg3 fxg3 23. hxg3 Qxg3 24. Qd2 Bf5 25. Nxb7 Bxc2 26. Qxc2 Rf4 27. Qd2 Rh4 28. Re3 Qh2+ 29. Kf2 Rg4 30. Rg1 Bf6 31. Rf3 Bh4+ 32. Kf1 Re8 33. Qxh6+ Kg8 34. Re3 Rf4+ 35. Ke2 Rxe3+ 36. Kxe3 Qg3+ 37. Kd2 Rf2+ 38. Kc1 Bg5+ 0-1

[Event "US Open-75"]
[Site "New York"]
[Date "1974.08.21"]
[Round "10"]
[White "Mengarini, Ariel"]
[Black "Seirawan, Yasser"]
[Result "0-1"]
[ECO "B07"]
[PlyCount "46"]
[EventDate "1974.08.11"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Bg5 Bg7 5. e5 Nfd7 6. Nd5 Nc6 7. Bb5 f6 8. Nf4 Ndxe5 9. dxe5 fxg5 10. Nd3 0-0 11. Bxc6 bxc6 12. Qd2 e6 13. h4 gxh4 14. Nf3 c5 15. Qc3 Bb7 16. Nxh4 Bd5 17. b3 dxe5 18. Nxc5 e4 19. Qg3 Qd6 20. Nxg6 Qxg3 21. Ne7+ Kf7 22. fxg3 Kxe7 23. Rxh7 Rf7 0-1

[Event "US Open-75"]
[Site "New York"]
[Date "1974.08.18"]
[Round "7"]
[White "Chellstorp, Craig V"]
[Black "Mengarini, Ariel"]
[Result "1-0"]
[ECO "A31"]
[PlyCount "77"]
[EventDate "1974.08.11"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 c5 3. Nf3 a6 4. d4 cxd4 5. Nxd4 e5 6. Nc2 d6 7. Bg5 Be6 8. Ne3 Nbd7 9. g3 b5 10. Bg2 bxc4 11. Bxf6 Nxf6 12. Qa4+ Bd7 13. Qxc4 Ra7 14. 0-0 Be7 15. Rfd1 0-0 16. b4 Qb8 17. a4 Rc8 18. Qb3 Bd8 19. Ncd5 Nxd5 20. Bxd5 Bc6 21. Rac1 Rac7 22. Rxc6 Rxc6 23. Bxc6 Rxc6 24. Nd5 g6 25. Rb1 Qb7 26. e4 Kg7 27. b5 Rc5 28. Qd3 axb5 29. axb5 f5 30. Ne3 Qxe4 31. Qxe4 fxe4 32. b6 Rc8 33. b7 Rb8 34. Rb5 Kf7 35. Nd5 Ke6 36. Nb4 Kd7 37. Na6 Kc6 38. Nxb8+ Kxb5 39. Na6 1-0

[Event "US Open-75"]
[Site "New York"]
[Date "1974.08.11"]
[Round "1"]
[White "Amory"]
[Black "Mengarini, Ariel"]
[Result "0-1"]
[ECO "B21"]
[PlyCount "96"]
[EventDate "1974.08.11"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. f4 Nf6 3. Nc3 d5 4. e5 Ng4 5. h3 Nh6 6. Nf3 Nf5 7. Bb5+ Nc6 8. Ne2 h5 9. h4 Bd7 10. Bxc6 Bxc6 11. d4 e6 12. a4 b5 13. b3 Be7 14. Ng5 b4 15. Rh3 a5 16. Be3 Qb6 17. Bf2 Bb7 18. Ng3 Nxd4 19. Nxh5 Nxc2+ 20. Qxc2 Rxh5 21. f5 Bxg5 22. hxg5 Rxg5 23. Rh8+ Kd7 24. Rxa8 Bxa8 25. 0-0-0 Rxg2 26. fxe6+ Qxe6 27. Re1 c4 28. bxc4 dxc4 29. Rd1+ Ke8 30. Rh1 Bd5 31. Qd2 Qxe5 32. Re1 Be4 33. Bd4 Qe6 34. Qf4 f5 35. Qb8+ Ke7 36. Qc7+ Ke8 37. Qb8+ Kf7 38. Qc7+ Kg8 39. Qd8+ Kh7 40. Rh1+ Kg6 41. Qh8 Kf7 42. Rh7 Rc2+ 43. Kd1 Bf3+ 44. Kxc2 Qe2+ 45. Kc1 Qd1+ 46. Kb2 Qxd4+ 47. Kc1 Qd1+ 48. Kb2 c3+ 0-1

[Event "Lone Pine op Louis D. Statham Masters"]
[Site "Lone Pine"]
[Date "1973.03.24"]
[Round "7"]
[White "Mengarini, Ariel"]
[Black "Cleghorn, Peter"]
[Result "0-1"]
[ECO "B20"]
[PlyCount "52"]
[EventDate "1973.03.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 c5 2. g3 Nc6 3. Bg2 g6 4. Ne2 Bg7 5. 0-0 e6 6. c3 Nge7 7. d3 0-0 8. Be3 b6 9. d4 cxd4 10. Nxd4 Ba6 11. Re1 Ne5 12. Na3 d5 13. Qa4 Bb7 14. Rad1 a6 15. Bg5 Re8 16. c4 dxe4 17. Nxe6 Qc8 18. Nxg7 Kxg7 19. Rd6 Nf3+ 20. Bxf3 exf3 21. Qd7 Nf5 22. Bf6+ Kh6 23. Rxe8 Qxe8 24. Rd1 Qe2 25. g4 Re8 26. h3 Qxf2+ 0-1

[Event "Lone Pine op Louis D. Statham Masters"]
[Site "Lone Pine"]
[Date "1973.03.23"]
[Round "6"]
[White "Gilden, Lawrence C"]
[Black "Mengarini, Ariel"]
[Result "0-1"]
[ECO "C90"]
[PlyCount "90"]
[EventDate "1973.03.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 Bg4 9. d3 h6 10. Nbd2 Na5 11. Bc2 Nh7 12. h3 Bh5 13. g4 Bg6 14. b4 Nb7 15. Bb3 Qd7 16. Nf1 Ng5 17. Nxg5 Bxg5 18. a4 Bxc1 19. Qxc1 0-0 20. Ng3 c5 21. axb5 axb5 22. Qe3 Rfc8 23. Rxa8 Rxa8 24. Bd5 Ra3 25. Rc1 Qc7 26. g5 h5 27. Nf5 Nd8 28. Nh4 Kh7 29. bxc5 dxc5 30. Nxg6 Kxg6 31. Qf3 Kxg5 32. Kh2 Kh6 33. Qe3+ Kh7 34. Qg5 g6 35. Qf6 c4 36. dxc4 bxc4 37. Rc2 Rb3 38. Rd2 Rb6 39. Qh4 Ne6 40. Ra2 Nf4 41. Ra4 Qd7 42. Ra8 Nxd5 43. exd5 Qxd5 44. Rd8 Qf3 45. Qg3 Qxg3+ 0-1

[Event "Lone Pine op Louis D. Statham Masters"]
[Site "Lone Pine"]
[Date "1973.03.22"]
[Round "5"]
[White "Mengarini, Ariel"]
[Black "Martinovsky, Eugene Simeon"]
[Result "0-1"]
[ECO "A49"]
[PlyCount "70"]
[EventDate "1973.03.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 0-0 5. 0-0 d6 6. Nbd2 Nbd7 7. e4 e5 8. c3 Re8 9. Re1 c6 10. b3 Qc7 11. Ba3 b5 12. c4 a6 13. Rc1 Bb7 14. c5 Qa5 15. Bb2 dxc5 16. dxe5 Ng4 17. Nc4 Qc7 18. Qd6 Qc8 19. Bh3 h5 20. Ne3 Rd8 21. Nxg4 hxg4 22. Bxg4 Nxe5 23. Nxe5 Rxd6 24. Bxc8 Rxc8 25. Rxc5 Rd2 26. Bc1 Rxa2 27. Rd1 Re8 28. Ng4 Rxe4 29. Nh6+ Kf8 30. Rd7 Bd4 31. Rxf7+ Ke8 32. Rg5 Re1+ 33. Kg2 Rxc1 34. Rxg6 Rxf2+ 35. Rxf2 c5+ 0-1

[Event "Lone Pine op Louis D. Statham Masters"]
[Site "Lone Pine"]
[Date "1973.03.21"]
[Round "4"]
[White "Shipman, Walter"]
[Black "Mengarini, Ariel"]
[Result "1/2-1/2"]
[ECO "A07"]
[PlyCount "136"]
[EventDate "1973.03.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 Bg4 3. Bg2 c6 4. 0-0 Nd7 5. d4 e6 6. Nbd2 f5 7. c4 Bd6 8. b3 Ngf6 9. Bb2 Qb8 10. Ng5 f4 11. f3 h6 12. fxg4 hxg5 13. h3 Qc7 14. Qc2 0-0-0 15. c5 Be7 16. gxf4 gxf4 17. Nf3 Ne4 18. b4 Bf6 19. Rad1 g5 20. Ba1 Rh6 21. Qb2 Rdh8 22. Ne5 Rxh3 23. Bxh3 Rxh3 24. Rf3 Rh4 25. e3 Bxe5 26. dxe5 Rxg4+ 27. Kf1 Rh4 28. Kg2 Ndxc5 29. Rh1 Rg4+ 30. Kf1 Qg7 31. bxc5 Ng3+ 32. Rxg3 Rxg3 33. Qh2 Rf3+ 34. Kg2 Rxe3 35. Qh8+ Qxh8 36. Rxh8+ Kd7 37. Rh7+ Ke8 38. Bd4 Re4 39. Bf2 g4 40. Rxb7 Re2 41. Kf1 Rxa2 42. Bh4 g3 43. Re7+ Kf8 44. Rxe6 Rf2+ 45. Kg1 f3 46. Rf6+ Ke8 47. Rxc6 Rd2 48. Re6+ Kd7 49. Rd6+ Kc7 50. Bxg3 Rg2+ 51. Kf1 Rxg3 52. Kf2 Rg5 53. e6 d4 54. Kxf3 Rxc5 55. Rd7+ Kc6 56. Ke4 Rc1 57. Rxd4 Re1+ 58. Kf5 a5 59. Kf6 Kc5 60. Rf4 Kd6 61. Rd4+ Kc5 62. Rd8 a4 63. e7 a3 64. e8Q Rxe8 65. Rxe8 Kb4 66. Ke5 a2 67. Ra8 Kb3 68. Kd4 Kb2 1/2-1/2

[Event "Lone Pine op Louis D. Statham Masters"]
[Site "Lone Pine"]
[Date "1973.03.20"]
[Round "3"]
[White "Christiansen, Larry Mark"]
[Black "Mengarini, Ariel"]
[Result "1/2-1/2"]
[ECO "D45"]
[PlyCount "62"]
[EventDate "1973.03.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. c4 Nf6 2. Nf3 e6 3. Nc3 d5 4. d4 c6 5. e3 a6 6. Bd2 c5 7. Rc1 Nc6 8. Ne5 cxd4 9. Nxc6 bxc6 10. exd4 Qb6 11. c5 Qb8 12. Bd3 g6 13. Qf3 Bg7 14. Bf4 Qxb2 15. 0-0 0-0 16. Na4 Qxd4 17. Nb6 e5 18. Nxa8 exf4 19. h3 Nd7 20. Bb1 Nxc5 21. Rfd1 Qb4 22. a3 Qa5 23. Qxf4 Ne6 24. Qb4 Qxb4 25. axb4 Nf4 26. Re1 Bb2 27. Rxc6 Bb7 28. Rc2 Ba3 29. Nb6 Bxb4 30. Rd1 Re8 31. Rc7 Re7 1/2-1/2

[Event "Lone Pine op Louis D. Statham Masters"]
[Site "Lone Pine"]
[Date "1973.03.19"]
[Round "2"]
[White "Mengarini, Ariel"]
[Black "Commons, Kim S"]
[Result "1/2-1/2"]
[ECO "B22"]
[PlyCount "60"]
[EventDate "1973.03.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 c5 3. c3 d5 4. exd5 exd5 5. Bb5+ Nc6 6. Qe2+ Be7 7. dxc5 Nf6 8. Nf3 0-0 9. Be3 Bg4 10. 0-0 Ne4 11. Re1 f5 12. Bxc6 bxc6 13. Na3 Rf6 14. Nc2 f4 15. Bd4 Rg6 16. Qd3 Bh3 17. Nh4 Bxh4 18. Qxh3 Qg5 19. Nb4 f3 20. g3 Bxg3 21. hxg3 Nxg3 22. fxg3 Rh6 23. Be3 f2+ 24. Kxf2 Qf6+ 25. Kg2 Rxh3 26. Kxh3 a5 27. Bd4 Qh6+ 28. Kg2 axb4 29. Re7 bxc3 30. bxc3 Qd2+ 1/2-1/2

[Event "Lone Pine op Louis D. Statham Masters"]
[Site "Lone Pine"]
[Date "1973.03.18"]
[Round "1"]
[White "Mengarini, Ariel"]
[Black "Sullivan, Martin"]
[Result "1-0"]
[ECO "B20"]
[PlyCount "49"]
[EventDate "1973.03.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 c5 2. g3 Nc6 3. Bg2 g6 4. Ne2 Bg7 5. 0-0 d6 6. Na3 Nf6 7. c3 d5 8. exd5 Nxd5 9. d4 cxd4 10. Nb5 0-0 11. Nexd4 Nxd4 12. Nxd4 e6 13. h4 Bd7 14. Bg5 Qb6 15. Qd2 Rac8 16. Rad1 Bxd4 17. Qxd4 Qxd4 18. Rxd4 Bc6 19. c4 Nb6 20. b3 Bxg2 21. Kxg2 f6 22. Be3 Rfe8 23. Rfd1 Rc7 24. Rd8 Rce7 25. Bc5 1-0

[Event "Las Vegas National op"]
[Site "Las Vegas"]
[Date "1973.03.16"]
[Round "8"]
[White "Shipman, Walter"]
[Black "Mengarini, Ariel"]
[Result "1-0"]
[ECO "D01"]
[PlyCount "69"]
[EventDate "1973.03.??"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "USA"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. d4 Nf6 2. Nc3 d5 3. Bg5 Bf5 4. Bxf6 exf6 5. e3 c6 6. Bd3 Qd7 7. Nge2 Bd6 8. Ng3 Bg6 9. 0-0 0-0 10. Bxg6 fxg6 11. e4 Na6 12. a3 Rad8 13. exd5 cxd5 14. Qf3 Bb8 15. Rfe1 Nc7 16. Rad1 Rfe8 17. Rxe8+ Rxe8 18. Nf1 Qf5 19. Qxf5 gxf5 20. Ne3 f4 21. Nexd5 Nxd5 22. Nxd5 Re2 23. Nb4 a5 24. Kf1 f3 25. gxf3 Re8 26. Nd3 Bxh2 27. f4 Re4 28. Kg2 Bxf4 29. Kf3 Rxd4 30. c3 Rxd3+ 31. Rxd3 Bc1 32. Rd8+ Kf7 33. Rd7+ Ke6 34. Rxb7 Kd5 35. a4 1-0

[Event "Las Vegas National op"]
[Site "Las Vegas"]
[Date "1973.03.15"]
[Round "7"]
[White "Mengarini, Ariel"]
[Black "Cleare, K."]
[Result "1-0"]
[ECO "A45"]
[PlyCount "61"]
[EventDate "1973.03.??"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "USA"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 e6 3. Nc3 Bb4 4. e4 c5 5. e5 h6 6. Bd2 Bxc3 7. bxc3 Nd5 8. Qg4 g5 9. h4 cxd4 10. cxd4 h5 11. hxg5 hxg4 12. Rxh8+ Ke7 13. Rxd8 Kxd8 14. Be2 Nc6 15. c3 g3 16. Nh3 b6 17. fxg3 Bb7 18. Nf2 Nde7 19. Bf3 Kc7 20. Ne4 Rh8 21. Kf2 Nf5 22. g4 Nfe7 23. Nd6 Rf8 24. Rh1 Ba6 25. Rh7 Nd8 26. c4 Kb8 27. a4 Kc7 28. Ke3 Bc8 29. Nb5+ Kb8 30. Bb4 Ndc6 31. Bd6+ 1-0

[Event "Las Vegas National op"]
[Site "Las Vegas"]
[Date "1973.03.13"]
[Round "4"]
[White "Mengarini, Ariel"]
[Black "Bisguier, Arthur Bernard"]
[Result "0-1"]
[ECO "C33"]
[PlyCount "52"]
[EventDate "1973.03.??"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "USA"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Bc4 Qh4+ 4. Kf1 d5 5. Bxd5 Nf6 6. Nc3 Bb4 7. Nf3 Qh5 8. Bb3 Nc6 9. Nd5 Nxd5 10. exd5 Ne7 11. d4 0-0 12. a3 Bd6 13. c4 b6 14. Kf2 Bg4 15. Bc2 Nf5 16. Bxf5 Qxf5 17. Bd2 Rfe8 18. Re1 Qd3 19. Qa4 b5 20. Qxb5 Reb8 21. Qa5 Bxf3 22. gxf3 Rxb2 23. Rad1 Qxd4+ 24. Kg2 Qxc4 25. Kh1 Ra2 26. Bc1 Qb3 0-1

[Event "Las Vegas National op"]
[Site "Las Vegas"]
[Date "1973.03.12"]
[Round "2"]
[White "Mengarini, Ariel"]
[Black "Berry, Frank Dudley Jr"]
[Result "1-0"]
[ECO "C10"]
[PlyCount "41"]
[EventDate "1973.03.??"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "USA"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 e6 2. Nf3 d5 3. Nc3 dxe4 4. Nxe4 Be7 5. d4 Nf6 6. Bd3 0-0 7. Nxf6+ Bxf6 8. c3 Nd7 9. Qc2 Kh8 10. Bf4 c5 11. 0-0 cxd4 12. cxd4 Nb6 13. Be5 Nd5 14. Bxh7 g6 15. Bxg6 fxg6 16. Qxg6 Bxe5 17. Nxe5 Qf6 18. Qh5+ Kg7 19. f4 Rg8 20. Rac1 Kf8 21. Rxc8+ 1-0

[Event "US Open-73"]
[Site "Atlantic City"]
[Date "1972.??.??"]
[Round "7"]
[White "Browne, Walter Shawn"]
[Black "Mengarini, Ariel"]
[Result "1-0"]
[ECO "C90"]
[PlyCount "109"]
[EventDate "1972.08.13"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 Bg4 9. d3 h6 10. Nbd2 Na5 11. Bc2 Nh7 12. h3 Bh5 13. Nf1 Ng5 14. Bxg5 Bxg5 15. Ng3 Bg6 16. b4 Nb7 17. d4 Bf6 18. d5 0-0 19. c4 bxc4 20. Ba4 Qe7 21. Rc1 a5 22. Bc6 Rab8 23. b5 Nd8 24. Qa4 Nxc6 25. bxc6 Ra8 26. Qxc4 Bh4 27. Nf5 Bxf5 28. exf5 Bg5 29. Rb1 Qf6 30. Rb7 Rac8 31. Qg4 g6 32. fxg6 Qxg6 33. h4 Bf6 34. Re4 Qxg4 35. Rxg4+ Bg7 36. Nd2 f5 37. Rg6 e4 38. Nc4 Rf6 39. Rxf6 Bxf6 40. Nxa5 Bxh4 41. Nb3 f4 42. Kf1 Ra8 43. Nc1 Ra5 44. Rxc7 Rxd5 45. Ke2 Rc5 46. Nb3 Rc2+ 47. Kd1 Rxf2 48. Rc8+ Kf7 49. c7 e3 50. Rf8+ Kxf8 51. c8Q+ Kf7 52. Qc4+ Kf6 53. Nd4 Kg6 54. Qg8+ Kh5 55. Qf7+ 1-0

[Event "US Open-73"]
[Site "Atlantic City"]
[Date "1972.??.??"]
[Round "11"]
[White "Estenger, Otto"]
[Black "Mengarini, Ariel"]
[Result "0-1"]
[ECO "B28"]
[PlyCount "74"]
[EventDate "1972.08.13"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. Nf3 a6 2. e4 c5 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Nb3 Bb4 7. Qd3 Nc6 8. Bd2 0-0 9. 0-0-0 a5 10. Kb1 a4 11. Nc1 b6 12. f3 a3 13. b3 Nd4 14. Nb5 Bc5 15. Nxd4 exd4 16. c4 dxc3 17. Bxc3 d5 18. e5 Nh5 19. Qxd5 Bf5+ 20. Ka1 Qg5 21. h4 Qg3 22. Be1 Qf4 23. Nd3 Bd4+ 24. Kb1 Rfd8 25. Qb5 Bxe5 26. Bf2 Bd4 27. g4 Qxf3 28. Bg2 Bxd3+ 29. Qxd3 Qxg2 30. Bxd4 Nf4 31. Qe3 Qxg4 32. Rhg1 Qf5+ 33. Ka1 Ne6 34. Rdf1 Nxd4 35. Qg3 Nc2+ 36. Kb1 Rd1+ 37. Rxd1 Ne3+ 0-1

[Event "US Open-73"]
[Site "Atlantic City"]
[Date "1972.??.??"]
[Round "9"]
[White "Garber, Russell H"]
[Black "Mengarini, Ariel"]
[Result "1-0"]
[ECO "B28"]
[PlyCount "59"]
[EventDate "1972.08.13"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 a6 3. d4 cxd4 4. c3 d5 5. exd5 Qxd5 6. cxd4 Bg4 7. Be2 e6 8. Nc3 Qd8 9. Qa4+ Nd7 10. d5 Ngf6 11. h3 Bh5 12. Bg5 exd5 13. Bxf6 gxf6 14. Nxd5 Be7 15. Rd1 Bg6 16. 0-0 0-0 17. Qg4 Kh8 18. Ne3 f5 19. Nxf5 Bc5 20. N5h4 Qe7 21. Nxg6+ hxg6 22. Rxd7 Qxe2 23. Qh4+ Kg7 24. b4 Qb5 25. Ng5 Qxd7 26. Qh7+ Kf6 27. Ne4+ Kf5 28. Nxc5 Qe7 29. g4+ Kf6 30. Qh4+ 1-0

[Event "US Open-73"]
[Site "Atlantic City"]
[Date "1972.??.??"]
[Round "2"]
[White "Lee, Dan"]
[Black "Mengarini, Ariel"]
[Result "0-1"]
[ECO "C36"]
[PlyCount "46"]
[EventDate "1972.08.13"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Nf3 d5 4. exd5 Nf6 5. Bb5+ Nbd7 6. d4 Nxd5 7. Nc3 Bb4 8. 0-0 Bxc3 9. bxc3 0-0 10. Bd3 N7f6 11. Qe1 Ng4 12. Ne5 Qg5 13. Nf3 Qh5 14. Ba3 Rd8 15. Qe4 Nge3 16. Ne5 Bf5 17. Qf3 Qxf3 18. Rxf3 Bxd3 19. cxd3 Nxc3 20. Bb4 Ne2+ 21. Kf2 Nxd4 22. Rxf4 Nec2 23. Rc1 f6 0-1

[Event "US Open-73"]
[Site "Atlantic City"]
[Date "1972.??.??"]
[Round "10"]
[White "Mengarini, Ariel"]
[Black "Barnes, Craig N"]
[Result "0-1"]
[ECO "B06"]
[PlyCount "72"]
[EventDate "1972.08.13"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 g6 2. e4 Bg7 3. c3 c5 4. dxc5 Nc6 5. Be3 Nf6 6. Nd2 0-0 7. Be2 d5 8. cxd6 exd6 9. Qc2 d5 10. Bf3 dxe4 11. Nxe4 Bf5 12. Nxf6+ Bxf6 13. Qd1 Ne5 14. Qxd8 Rfxd8 15. Be2 Bd3 16. Nf3 Nc4 17. Bxd3 Rxd3 18. Ke2 Nxb2 19. Rab1 Rxc3 20. Rhc1 Rac8 21. Rxc3 Rxc3 22. Nd4 Nc4 23. Rxb7 Nxe3 24. fxe3 Ra3 25. Rb2 Kg7 26. Rc2 Bg5 27. Nb3 a5 28. e4 h5 29. Kf1 a4 30. Nc5 Be7 31. Nd7 Re3 32. Rc4 Ra3 33. Nb6 Rxa2 34. Nxa4 Bd6 35. h3 Bg3 36. Nb6 Rf2+ 0-1

[Event "US Open-73"]
[Site "Atlantic City"]
[Date "1972.??.??"]
[Round "6"]
[White "Mengarini, Ariel"]
[Black "Denker, Arnold Sheldon"]
[Result "1/2-1/2"]
[ECO "D53"]
[PlyCount "44"]
[EventDate "1972.08.13"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 h6 6. Bh4 0-0 7. Qc2 c5 8. dxc5 Qa5 9. e3 Qxc5 10. cxd5 Nxd5 11. Bxe7 Nxe7 12. Qe4 Nbc6 13. Bd3 f5 14. Qa4 Bd7 15. 0-0 Ne5 16. Bb5 Nxf3+ 17. gxf3 Bc6 18. Bxc6 Nxc6 19. Kh1 Rad8 20. Rad1 a6 21. Rg1 Qe7 22. Ne2 Rxd1 1/2-1/2

[Event "US Open-73"]
[Site "Atlantic City"]
[Date "1972.??.??"]
[Round "5"]
[White "Mengarini, Ariel"]
[Black "Larsen, Bent"]
[Result "1-0"]
[ECO "E60"]
[PlyCount "101"]
[EventDate "1972.08.13"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Qc2 c5 4. dxc5 Qa5+ 5. Nd2 Bg7 6. e4 Nc6 7. Ngf3 0-0 8. Be2 Qxc5 9. 0-0 a5 10. Nb3 Qd6 11. Rd1 Qc7 12. h3 b6 13. Be3 Bb7 14. Nbd2 Nb4 15. Qb3 Nxe4 16. a3 Nxd2 17. Rxd2 Nc6 18. Bxb6 Qc8 19. c5 Bh6 20. Rc2 e6 21. Rd1 Ne7 22. Ne5 Nd5 23. Bb5 Bc6 24. Bxc6 dxc6 25. Qa4 Bg7 26. Nc4 Qa6 27. Qxc6 a4 28. Qd7 Bf6 29. Ba5 Bd8 30. Bb4 Ra7 31. Qd6 Qb5 32. Rxd5 exd5 33. Qxd5 Be7 34. Ne5 Rc7 35. Ng4 Rd7 36. Qe5 f6 37. Qe6+ Kg7 38. Bd2 g5 39. c6 Rc7 40. Ne3 Bc5 41. Nf5+ Kg6 42. Be3 Bxe3 43. Nxe3 Rd8 44. Qe4+ Kg7 45. Nf5+ Kh8 46. Nd4 Qa5 47. Qe6 Rf8 48. Rc3 Qa8 49. Nb5 Rg7 50. c7 Qc8 51. Qd6 1-0

[Event "US Open-73"]
[Site "Atlantic City"]
[Date "1972.??.??"]
[Round "12"]
[White "Mengarini, Ariel"]
[Black "Presser, David"]
[Result "1-0"]
[ECO "B20"]
[PlyCount "43"]
[EventDate "1972.08.13"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. g3 d5 3. d4 dxe4 4. d5 Nf6 5. Nc3 Bf5 6. Be3 Nbd7 7. Qd2 g6 8. 0-0-0 Bg7 9. Bh6 Bxh6 10. Qxh6 Qa5 11. h3 e3 12. Qxe3 h5 13. Nf3 0-0-0 14. Nd2 Rhe8 15. f3 Nf8 16. Nc4 Qa6 17. g4 Nxd5 18. Rxd5 Rxd5 19. Nxd5 Qxa2 20. Qe5 Ne6 21. Ncb6+ axb6 22. Nxb6+ 1-0

[Event "US Open-73"]
[Site "Atlantic City"]
[Date "1972.??.??"]
[Round "8"]
[White "Mengarini, Ariel"]
[Black "Wachtel, Robert"]
[Result "1-0"]
[ECO "A46"]
[PlyCount "115"]
[EventDate "1972.08.13"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. dxc5 Bxc5 5. a3 0-0 6. Nc3 d5 7. b4 Be7 8. cxd5 Nxd5 9. Nxd5 exd5 10. Bb2 Nc6 11. e3 Bf6 12. Qd2 Bg4 13. Be2 Qe7 14. 0-0 Rfd8 15. Rfe1 Rac8 16. Rac1 h6 17. Bxf6 Qxf6 18. b5 Ne7 19. Qd4 Qxd4 20. Nxd4 Bd7 21. Bd3 b6 22. Kf1 Kf8 23. Ke2 Rxc1 24. Rxc1 Rc8 25. Ra1 Rc7 26. Kd2 g6 27. a4 Nc8 28. a5 Ke7 29. f3 Kd6 30. g4 bxa5 31. Rxa5 Nb6 32. Ra6 Kc5 33. Kc3 Be8 34. Nb3+ Kd6+ 35. Kd2 Bd7 36. h4 Bc8 37. Ra1 Nc4+ 38. Bxc4 dxc4 39. Nd4 Kc5 40. h5 g5 41. Kc3 Re7 42. Kd2 Rc7 43. Ra4 Bd7 44. Ra6 Bxb5 45. Rxh6 Ba4 46. Kc3 Re7 47. Nf5 Rd7 48. Rh8 Rd3+ 49. Kb2 c3+ 50. Ka2 c2 51. Rc8+ Kb4 52. Nd4 Rxe3 53. Rxc2 Rd3 54. Rb2+ Kc5 55. Nb3+ Kd6 56. Ka3 Be8 57. h6 Rxf3 58. Rh2 1-0

[Event "US Open-73"]
[Site "Atlantic City"]
[Date "1972.??.??"]
[Round "4"]
[White "Taylor, Timothy"]
[Black "Mengarini, Ariel"]
[Result "0-1"]
[ECO "D31"]
[PlyCount "60"]
[EventDate "1972.08.13"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 c6 4. e4 dxe4 5. Nxe4 Bb4+ 6. Bd2 Qxd4 7. Bxb4 Qxe4+ 8. Be2 c5 9. Bxc5 Qxg2 10. Bf3 Qg5 11. Ba3 Ne7 12. Ne2 Nbc6 13. Rg1 Qe5 14. Qd3 Bd7 15. 0-0-0 0-0-0 16. Qb3 Nf5 17. Rg4 Na5 18. Qb4 Bc6 19. Rd5 exd5 20. Qxa5 Kb8 21. cxd5 Bxd5 22. Bc5 a6 23. Bb6 Rd7 24. Rc4 Qd6 25. Bc5 Qh6+ 26. Kc2 Bxc4 27. Qb4 Bd3+ 28. Kb3 Qe6+ 29. Ka3 Bxe2 30. Bd6+ Nxd6 0-1

[Event "Lone Pine op Louis D. Statham Masters"]
[Site "Lone Pine"]
[Date "1971.03.19"]
[Round "7"]
[White "Mengarini, Ariel"]
[Black "Anderson, Robert L"]
[Result "1-0"]
[ECO "C32"]
[PlyCount "107"]
[EventDate "1971.03.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 e5 2. f4 d5 3. exd5 e4 4. d3 Nf6 5. dxe4 Nxe4 6. Qd4 Qh4+ 7. g3 Nxg3 8. Qe5+ Kd8 9. Nf3 Qh5 10. Bg2 Nf5 11. Nc3 Bb4 12. d6 c6 13. a3 f6 14. Qe4 Bxc3+ 15. Kd1 Ba5 16. c4 Re8 17. Qd3 c5 18. b4 Bb6 19. b5 Nh4 20. Rg1 Nxg2 21. Rxg2 Bg4 22. Rg3 Ba5 23. Bd2 Bxd2 24. Kxd2 Bxf3 25. Rxf3 Qxh2+ 26. Kc3 Nd7 27. Qd5 Rb8 28. Qf7 Qe2 29. Rd3 Qe6 30. Qxg7 f5 31. Kb3 Qf6 32. Qg1 a6 33. a4 a5 34. Rad1 Qf7 35. Rd5 Qg6 36. Qf2 Qg4 37. Rg1 Qe2 38. Qxe2 Rxe2 39. Rxf5 Re3+ 40. Kc2 Re6 41. Rg8+ Re8 42. Rg7 Rf8 43. Rxf8+ Nxf8 44. Rf7 Ke8 45. Re7+ Kd8 46. f5 b6 47. f6 Rc8 48. Kd2 h5 49. Ke3 h4 50. Kf3 Ng6 51. f7 Ne5+ 52. Rxe5 Kd7 53. Re7+ Kxd6 54. Re8 1-0

[Event "Lone Pine op Louis D. Statham Masters"]
[Site "Lone Pine"]
[Date "1971.03.18"]
[Round "6"]
[White "Karklins, Andrew"]
[Black "Mengarini, Ariel"]
[Result "1-0"]
[ECO "C91"]
[PlyCount "65"]
[EventDate "1971.03.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. d4 b5 6. Bb3 Nxd4 7. Nxd4 exd4 8. c3 Bb7 9. 0-0 Nf6 10. cxd4 Be7 11. Re1 0-0 12. Nd2 c5 13. d5 Re8 14. Bc2 Bf8 15. b3 g6 16. Bb2 Bg7 17. a4 Rb8 18. Ra2 Qe7 19. Re3 Bc8 20. Qa1 Bd7 21. axb5 Bxb5 22. h3 Rb7 23. Bd3 Nh5 24. Bxg7 Nxg7 25. Nc4 f6 26. Bf1 Qd8 27. Na5 Rf7 28. Nc6 Qc8 29. Bxb5 axb5 30. Ra5 b4 31. Re2 Nf5 32. Rea2 Nd4 33. Ra8 1-0

[Event "Lone Pine op Louis D. Statham Masters"]
[Site "Lone Pine"]
[Date "1971.03.18"]
[Round "5"]
[White "Mengarini, Ariel"]
[Black "Ervin, Roy C"]
[Result "1-0"]
[ECO "C04"]
[PlyCount "21"]
[EventDate "1971.03.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. d4 e6 2. e4 d5 3. Nd2 Nc6 4. Ne2 Nf6 5. e5 Nd7 6. c3 Be7 7. Nf4 Nf8 8. Qh5 Ng6 9. Nf3 0-0 10. Bd3 Bd7 11. h4 1-0

[Event "Lone Pine op Louis D. Statham Masters"]
[Site "Lone Pine"]
[Date "1971.03.17"]
[Round "4"]
[White "Mengarini, Ariel"]
[Black "Martinovsky, Eugene Simeon"]
[Result "0-1"]
[ECO "B12"]
[PlyCount "78"]
[EventDate "1971.03.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c6 2. f4 d5 3. e5 g6 4. Nf3 h5 5. d4 Bf5 6. c3 Nh6 7. Na3 e6 8. Nc2 Be7 9. Ne3 c5 10. Nxf5 Nxf5 11. Bd3 Nc6 12. Bxf5 gxf5 13. Be3 Qb6 14. Qe2 a5 15. 0-0 cxd4 16. Bxd4 Qa6 17. Qd1 a4 18. Rc1 Qb5 19. Rf2 Na5 20. Kh1 b6 21. Re2 Nb7 22. b3 axb3 23. axb3 Nc5 24. Bxc5 bxc5 25. c4 dxc4 26. bxc4 Qa6 27. Qb3 h4 28. h3 Kf8 29. Qb5 Qxb5 30. cxb5 Kg7 31. Rb2 Ra4 32. Nd2 Rxf4 33. Nc4 Rd4 34. b6 Bg5 35. Ra1 Rxc4 36. b7 Rb8 37. g3 Rc1+ 38. Rxc1 Bxc1 39. Rb1 Ba3 0-1

[Event "Lone Pine op Louis D. Statham Masters"]
[Site "Lone Pine"]
[Date "1971.03.16"]
[Round "3"]
[White "Rubin, Sidney J"]
[Black "Mengarini, Ariel"]
[Result "0-1"]
[ECO "C44"]
[PlyCount "70"]
[EventDate "1971.03.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. c3 d6 5. Bc4 Nf6 6. Qc2 Be7 7. cxd4 0-0 8. Nc3 d5 9. exd5 Nb4 10. Qb3 Bf5 11. 0-0 Bc2 12. Qa3 Nbxd5 13. Qa5 Bb4 14. Qb5 a6 15. Qxb7 Rb8 16. Qxa6 Nxc3 17. a3 Ra8 18. Qb7 Ncd5 19. Bg5 Be7 20. Rac1 Rb8 21. Qa6 Rxb2 22. Bxd5 Nxd5 23. Bxe7 Qxe7 24. Rfe1 Qd6 25. Qe2 Nf4 26. Qd2 Be4 27. Qxb2 Bxf3 28. Qc2 Nxg2 29. Re5 Nf4 30. Re3 Ba8 31. Rce1 Qd5 32. f3 Qxd4 33. Qc3 Qd6 34. Qc2 Qf6 35. Re8 Nh3+ 0-1

[Event "Lone Pine op Louis D. Statham Masters"]
[Site "Lone Pine"]
[Date "1971.03.15"]
[Round "2"]
[White "Avery, Robert William"]
[Black "Mengarini, Ariel"]
[Result "0-1"]
[ECO "D08"]
[PlyCount "56"]
[EventDate "1971.03.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. Nbd2 Bg4 6. a3 Qe7 7. Qa4 0-0-0 8. g3 Kb8 9. Bg2 Nxe5 10. 0-0 Nf6 11. Qb5 Nxf3+ 12. Nxf3 a6 13. Qb3 Ne4 14. Bf4 Nc5 15. Qb4 f6 16. Rad1 Ne6 17. Qb3 Nxf4 18. gxf4 c5 19. e3 Qc7 20. exd4 cxd4 21. Rxd4 Bc5 22. Rxd8+ Rxd8 23. Rd1 Rxd1+ 24. Qxd1 Qxf4 25. h3 Bxf3 26. Bxf3 Qg3+ 27. Kh1 Qxh3+ 28. Kg1 Qg3+ 0-1

[Event "Lone Pine op Louis D. Statham Masters"]
[Site "Lone Pine"]
[Date "1971.03.14"]
[Round "1"]
[White "Mengarini, Ariel"]
[Black "Fulkerson, Greg"]
[Result "0-1"]
[ECO "B02"]
[PlyCount "98"]
[EventDate "1971.03.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. Nc3 e6 4. d4 Nxc3 5. bxc3 d5 6. Nh3 c5 7. Nf4 f6 8. Qh5+ Ke7 9. Ng6+ hxg6 10. Qxh8 Kf7 11. Bd3 Nc6 12. g4 f5 13. Rg1 cxd4 14. gxf5 exf5 15. Bf4 Qe8 16. Kf1 dxc3 17. Rxg6 Nxe5 18. Rg3 Nxd3 19. Qh5+ Ke7 20. Qg5+ Kd7 21. Rxd3 Qe4 22. f3 Qc4 23. Qxf5+ Kc6 24. Qg6+ Kb5 25. Qe8+ Ka6 26. Qg6+ b6 27. Be3 Ba3 28. Kg1 Bc5 29. Kh1 d4 30. Bf2 Bb7 31. a4 Ka5 32. Qh5 Rf8 33. Kg2 g6 34. Qg4 Rf5 35. h4 Qf7 36. Rf1 Rf4 37. Qg3 Ba6 38. Rfd1 Bxd3 39. Rxd3 Kxa4 40. Qg5 Be7 41. Qe5 Bc5 42. Kg3 g5 43. Qxg5 Rf6 44. Qe5 Rg6+ 45. Kh2 Ka3 46. Kh1 Qd7 47. Qh2 Bd6 48. Rxd4 Qe6 49. f4 Bc5 0-1

[Event "US Open-66"]
[Site "San Juan"]
[Date "1965.07.??"]
[Round "?"]
[White "Mengarini, Ariel"]
[Black "Lombardy, William James"]
[Result "0-1"]
[ECO "B20"]
[PlyCount "76"]
[EventDate "1965.07.26"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 c5 2. g3 d5 3. d4 dxe4 4. d5 e5 5. Bg2 f5 6. g4 f4 7. Bxe4 Nf6 8. Bf3 e4 9. g5 exf3 10. gxf6 Qxf6 11. Qxf3 Bd6 12. Nc3 0-0 13. Ne4 Qe7 14. Ne2 Bg4 15. Qxg4 Qxe4 16. Rg1 Rf7 17. Qc8+ Bf8 18. Qe6 Qxc2 19. Nxf4 Nd7 20. Qe2 Qa4 21. Ne6 Nf6 22. Bh6 Kh8 23. b3 Qd7 24. Be3 Qxd5 25. Nxf8 Raxf8 26. Rd1 Qe5 27. Rg5 Qc3+ 28. Bd2 Qh3 29. Rxc5 Qxh2 30. Be3 Ne4 31. Rc2 Qh1+ 32. Qf1 Qh5 33. Qg2 Re7 34. Rd3 h6 35. Re2 Rf3 36. Bc5 Rxd3 37. Bxe7 Nc3 38. Rd2 Qd1+ 0-1

[Event "US Open-66"]
[Site "San Juan"]
[Date "1965.07.??"]
[Round "?"]
[White "Suarez, Luis Armando"]
[Black "Mengarini, Ariel"]
[Result "1-0"]
[ECO "A50"]
[PlyCount "53"]
[EventDate "1965.07.26"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 Nc6 2. d4 e5 3. d5 Nce7 4. c4 Ng6 5. Be3 Nf6 6. Nc3 Bb4 7. f3 0-0 8. g4 d6 9. Qd2 Bxg4 10. fxg4 Nxe4 11. Qc2 Qh4+ 12. Bf2 Nxf2 13. Qxf2 Qxg4 14. Be2 Qd7 15. Qg3 f5 16. Nh3 Rf6 17. 0-0-0 Qe7 18. Bh5 Nf8 19. Rdf1 Nd7 20. Ng5 Nc5 21. Rhg1 Raf8 22. Nxh7 Kxh7 23. Qh4 g5 24. Bg6+ Kg8 25. Qxg5 Qg7 26. Bh7+ Kxh7 27. Qxg7# 1-0

[Event "Atlantic op"]
[Site "Atlantic City"]
[Date "1965.??.??"]
[Round "?"]
[White "Grefe, John Alan"]
[Black "Mengarini, Ariel"]
[Result "0-1"]
[ECO "B00"]
[PlyCount "90"]
[EventDate "1965.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 b6 3. Nf3 Bb7 4. Nc3 Bb4 5. Bd3 Nf6 6. Qe2 d5 7. exd5 Qxd5 8. 0-0 Qh5 9. Ne4 Nxe4 10. Bxe4 c6 11. Bf4 0-0 12. h3 Nd7 13. g4 Qxh3 14. Ng5 Qh4 15. Bxh7+ Kh8 16. Kg2 Nf6 17. Bf5 c5+ 18. f3 Nh5 19. Qe5 exf5 20. Qxf5 g6 21. Nxf7+ Rxf7 22. Be5+ Rg7 23. Bxg7+ Kxg7 24. Qd7+ Kh8 25. gxh5 gxh5 26. Qh3 Rg8+ 27. Kh2 Qf4+ 28. Kh1 h4 29. d5 Bxd5 30. Rad1 Bb7 31. c3 Ba5 32. Rde1 Bc8 33. Qh2 Qxh2+ 34. Kxh2 b5 35. Rg1 Bc7+ 36. Kh1 Bb7 37. Rxg8+ Kxg8 38. Kg2 Kf7 39. Rd1 Bc8 40. Rd5 h3+ 41. Kf2 Kg6 42. Kg1 Bb7 43. Rd3 c4 44. Rd1 Bxf3 45. Rf1 h2+ 0-1

[Event "New Jersey State-ch op"]
[Site "East Orange"]
[Date "1957.??.??"]
[Round "4"]
[White "Feuerstein, Arthur William"]
[Black "Mengarini, Ariel"]
[Result "1-0"]
[ECO "A94"]
[PlyCount "67"]
[EventDate "1957.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. Nf3 f5 2. g3 Nf6 3. Bg2 e6 4. 0-0 d5 5. c4 c6 6. b3 Bd6 7. d4 0-0 8. Ba3 Bxa3 9. Nxa3 Bd7 10. Nc2 Be8 11. Nce1 Bh5 12. Qc1 Qe7 13. Nd3 Nbd7 14. Re1 Rad8 15. c5 Ne4 16. b4 a6 17. a4 Ra8 18. b5 axb5 19. axb5 Qf6 20. Nfe5 Nxe5 21. Nxe5 f4 22. Rxa8 Rxa8 23. Qxf4 Qxf4 24. gxf4 cxb5 25. Bh3 Re8 26. Ra1 Nc3 27. e3 b4 28. Ra7 Be2 29. Rxb7 Bb5 30. Bf1 Bxf1 31. Kxf1 Na2 32. c6 Rc8 33. c7 b3 34. Rb8 1-0

[Event "New Jersey State-ch op"]
[Site "East Orange"]
[Date "1957.??.??"]
[Round "1"]
[White "Garfinkel, Boris"]
[Black "Mengarini, Ariel"]
[Result "0-1"]
[ECO "D43"]
[PlyCount "46"]
[EventDate "1957.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 c6 4. Nf3 Nf6 5. Bg5 h6 6. Bh4 dxc4 7. e4 g5 8. Bg3 Bb4 9. Ne5 b5 10. Qf3 Bb7 11. 0-0-0 Nbd7 12. h4 g4 13. Nxg4 Nxg4 14. Qxg4 Qa5 15. Qf3 Bxc3 16. Qxc3 Qxa2 17. d5 0-0-0 18. dxe6 fxe6 19. Be2 Rhg8 20. Bh5 a5 21. Bf7 b4 22. Qd4 c3 23. bxc3 b3 0-1

[Event "New Jersey State-ch op"]
[Site "East Orange"]
[Date "1957.??.??"]
[Round "3"]
[White "Mengarini, Ariel"]
[Black "Fischer, Robert James"]
[Result "1/2-1/2"]
[ECO "E60"]
[PlyCount "63"]
[EventDate "1957.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "Fischer"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Qc2 Bg7 4. Nc3 0-0 5. Bg5 c5 6. d5 d6 7. e4 Na6 8. Qd2 Qa5 9. Bd3 Nc7 10. Nge2 a6 11. 0-0 b5 12. Bh6 bxc4 13. Bxc4 Bxh6 14. Qxh6 Nb5 15. Qd2 Nd7 16. f4 Nb6 17. Bb3 Qb4 18. f5 Nd7 19. Rf4 Nd4 20. Nxd4 cxd4 21. Nb1 a5 22. fxg6 hxg6 23. Qxb4 axb4 24. Nd2 Nc5 25. Bc4 Ba6 26. a3 Bxc4 27. Nxc4 bxa3 28. bxa3 Rfb8 29. e5 Ra4 30. Rxd4 dxe5 31. Rg4 e4 32. Ne5 1/2-1/2

[Event "New Jersey State-ch op"]
[Site "East Orange"]
[Date "1957.??.??"]
[Round "7"]
[White "Mengarini, Ariel"]
[Black "MacDonald, Jonathan"]
[Result "1/2-1/2"]
[ECO "D64"]
[PlyCount "52"]
[EventDate "1957.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. e3 Be7 6. Nf3 0-0 7. Rc1 c6 8. Qc2 Ne4 9. Bxe7 Qxe7 10. Nxe4 dxe4 11. Qxe4 Qb4+ 12. Kd1 Qxb2 13. Bd3 Nf6 14. Qh4 c5 15. g4 e5 16. g5 Bg4 17. Bxh7+ Nxh7 18. Qxg4 exd4 19. exd4 cxd4 20. Re1 Rfe8 21. g6 fxg6 22. Ne5 Qxf2 23. Qxg6 Qf4 24. Re4 Qf6 25. Qxf6 Nxf6 26. Re2 Rad8 1/2-1/2

[Event "Tartakover Memorial op"]
[Site "Detroit"]
[Date "1956.09.03"]
[Round "7"]
[White "Mengarini, Ariel"]
[Black "Skema, Kazys"]
[Result "1-0"]
[ECO "D64"]
[PlyCount "65"]
[EventDate "1956.08.31"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "USA"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Be7 5. e3 Nbd7 6. Nf3 0-0 7. Rc1 c6 8. Qc2 Re8 9. a3 h6 10. Bh4 dxc4 11. Bxc4 Nd5 12. Bg3 N7b6 13. Ba2 Nxc3 14. Qxc3 Nd5 15. Qd2 Bd6 16. Bb1 Ne7 17. Bxd6 Qxd6 18. 0-0 Bd7 19. Ne5 Red8 20. Qd3 Be8 21. Qh7+ Kf8 22. Qh8+ Ng8 23. Bh7 Ke7 24. Qxg8 Rdc8 25. Qxg7 Rc7 26. Qxh6 Kd8 27. Qf6+ Qe7 28. Ng4 Qxf6 29. Nxf6 Ke7 30. Nxe8 Rxe8 31. Bd3 c5 32. b4 a6 33. g3 1-0

[Event "Tartakover Memorial op"]
[Site "Detroit"]
[Date "1956.09.02"]
[Round "5"]
[White "Harvey, Phillip"]
[Black "Mengarini, Ariel"]
[Result "0-1"]
[ECO "A13"]
[PlyCount "38"]
[EventDate "1956.08.31"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "USA"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. Nf3 d5 2. c4 e6 3. g3 dxc4 4. Qa4+ Nd7 5. Nc3 a6 6. Qxc4 Ngf6 7. d4 b5 8. Qd3 Bb7 9. a3 c5 10. Bg2 cxd4 11. Qxd4 Bc5 12. Qd1 Rc8 13. 0-0 0-0 14. Bf4 Qb6 15. e3 Rfd8 16. Qc2 h6 17. Rad1 Bxf3 18. Bxf3 g5 19. b4 Be7 0-1

[Event "Tartakover Memorial op"]
[Site "Detroit"]
[Date "1956.09.02"]
[Round "6"]
[White "Mengarini, Ariel"]
[Black "Dreibergs, Leonids"]
[Result "1/2-1/2"]
[ECO "D63"]
[PlyCount "120"]
[EventDate "1956.08.31"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "USA"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 0-0 6. Rc1 Nbd7 7. Nf3 a6 8. Qc2 h6 9. Bh4 dxc4 10. Bxc4 b5 11. Be2 c5 12. 0-0 Bb7 13. dxc5 Nxc5 14. Rfd1 Qb6 15. Bxf6 Bxf6 16. b4 Rac8 17. bxc5 Rxc5 18. Qb3 Qc6 19. Ne1 Rxc3 20. Bf3 Rxc1 21. Bxc6 Rxd1 22. Qxd1 Bxc6 23. Qd6 Rc8 24. h3 a5 25. Nf3 b4 26. Qc5 Bd8 27. Ne5 Bb7 28. Qb5 Rc1+ 29. Kh2 Bc7 30. Qxb7 Bxe5+ 31. f4 Bc7 32. h4 g6 33. h5 gxh5 34. Qb5 h4 35. Qh5 Bd8 36. Qxh6 Rc2 37. e4 Rxa2 38. f5 exf5 39. exf5 Rf2 40. Qe3 Bc7+ 41. Kh3 Rxf5 42. Qc1 Bd8 43. Qc6 Rf6 44. Qe8+ Kg7 45. Qxd8 Rg6 46. Qxa5 Re6 47. Qxb4 Rg6 48. Qd4+ Kg8 49. Qxh4 Re6 50. Qd4 Rg6 51. g4 Re6 52. Kg3 Rg6 53. Kf4 Re6 54. Kf5 Rg6 55. Kf4 Re6 56. Kg5 Rg6+ 57. Kh5 Re6 58. Qd3 Kg7 59. Qd4+ Kg8 60. Qd8+ Kg7 1/2-1/2

[Event "Tartakover Memorial op"]
[Site "Detroit"]
[Date "1956.09.01"]
[Round "3"]
[White "Mengarini, Ariel"]
[Black "Uhlman, R."]
[Result "0-1"]
[ECO "E60"]
[PlyCount "54"]
[EventDate "1956.08.31"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "USA"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Qc2 d5 4. cxd5 Bf5 5. Qa4+ c6 6. dxc6 Nxc6 7. Nf3 e5 8. e3 Bxb1 9. Rxb1 Bb4+ 10. Bd2 Bxd2+ 11. Kxd2 0-0 12. Rd1 Ne4+ 13. Ke1 exd4 14. Bb5 Qb6 15. Bxc6 bxc6 16. Qxd4 Qa5+ 17. b4 Qf5 18. Qb2 c5 19. bxc5 Qxc5 20. Nd2 Qa5 21. f3 Rab8 22. Qd4 Rfd8 23. fxe4 Rxd4 24. exd4 Qc3 25. Ke2 Qxd4 26. Rhf1 Rb2 27. Rf3 Rxa2 0-1

